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Source: Ranunculaceae of North America Update, database (version 2011)

ITIS records citing this source
 
 Kingdom Plantae
  Aconitum L. -- accepted -- aconite, monkshood, wolfsbane
  Aconitum anthora L. -- accepted -- yellow monkshood
  Aconitum bulbiferum Howell -- not accepted
  Aconitum carmichaelii Debeaux -- accepted -- Carmichael's monkshood
  Aconitum columbianum Nutt. -- accepted -- Columbian monkshood
  Aconitum columbianum ssp. columbianum Nutt. -- accepted -- Columbian monkshood
  Aconitum columbianum ssp. pallidum Piper -- not accepted
  Aconitum columbianum ssp. viviparum (Greene) D.E. Brink -- accepted -- Columbian monkshood
  Aconitum columbianum var. bakeri (Greene) H.D. Harr. -- not accepted
  Aconitum columbianum var. columbianum Nutt. -- not accepted -- Columbian monkshood
  Aconitum columbianum var. howellii (A. Nelson & J.F. Macbr.) C.L. Hitchc. -- not accepted
  Aconitum columbianum var. ochroleucum A. Nelson -- not accepted
  Aconitum delphiniifolium DC. -- not accepted -- larkspurleaf monkshood
  Aconitum delphiniifolium DC. -- accepted
  Aconitum delphiniifolium ssp. chamissonianum (Rchb.) Hultén -- not accepted -- larkspurleaf monkshood
  Aconitum delphiniifolium ssp. delphiniifolium DC. -- not accepted -- larkspurleaf monkshood
  Aconitum delphiniifolium ssp. paradoxum (Rchb.) Hultén -- not accepted -- larkspurleaf monkshood
  Aconitum delphiniifolium var. albiflorum A.E. Porsild -- not accepted
  Aconitum ferox Wall. ex Ser. -- accepted -- Indian aconite
  Aconitum fischeri Rchb. -- accepted -- Fischer monkshood
  Aconitum geranioides Greene -- not accepted
  Aconitum hansenii Greene -- not accepted
  Aconitum howellii A. Nelson & J.F. Macbr. -- not accepted
  Aconitum infectum Greene -- not accepted -- Arizona monkshood
  Aconitum leibergii Greene -- not accepted
  Aconitum lycoctonum L. -- accepted
  Aconitum maximum Pall. ex DC. -- accepted -- Kamchatka aconite
  Aconitum maximum ssp. maximum Pall. ex DC. -- accepted -- Kamchatka aconite
  Aconitum mogollonicum Greene -- not accepted
  Aconitum napellus L. -- accepted -- Venus' chariot
  Aconitum nivatum A. Nelson -- not accepted
  Aconitum noveboracense A. Gray ex Coville -- not accepted -- northern blue monkshood, northern wild monkshood
  Aconitum noveboracense var. quasiciliatum Fassett -- not accepted
  Aconitum reclinatum A. Gray -- accepted -- trailing white monkshood
  Aconitum septentrionale Koelle -- not accepted -- wolfsbane
  Aconitum uncinatum L. -- accepted -- southern blue monkshood
  Aconitum uncinatum ssp. muticum (DC.) Hardin -- not accepted -- southern blue monkshood
  Aconitum uncinatum ssp. noveboracense (A. Gray ex Coville) Hardin -- not accepted
  Aconitum uncinatum ssp. uncinatum L. -- not accepted -- southern blue monkshood
  Aconitum uncinatum var. acutidens Fernald -- not accepted
  Aconitum uncinatum var. muticum DC. -- not accepted
  Aconitum variegatum L. -- accepted -- Manchurian monkshood
  Aconitum viviparum Greene -- not accepted
  Aconitum vulparia Rchb. -- not accepted -- wolfsbane
  Aconitum X bicolor Schult. (pro. sp.) -- accepted -- twocolor monkshood
  Actaea L. -- accepted -- baneberry
  Actaea alba auct. non (L.) Mill. -- not accepted
  Actaea arguta Nutt. -- not accepted
  Actaea arguta var. viridiflora (Greene) Tidestr. -- not accepted
  Actaea arizonica (S. Watson) J. Compton -- accepted -- Arizona bugbane
  Actaea cordifolia DC. -- accepted -- Appalachian bugbane
  Actaea elata (Nutt.) Prantl -- accepted -- tall bugbane
  Actaea elata var. alpestris (H.W. Lee & C.W. Park) Cubey -- accepted -- tall bugbane
  Actaea elata var. elata (Nutt.) Prantl -- accepted -- tall bugbane
  Actaea laciniata (S. Watson) J. Compton -- accepted -- Mt. Hood bugbane
  Actaea pachypoda Elliott -- accepted -- baneberry, white baneberry
  Actaea podocarpa DC. -- accepted -- mountain bugbane
  Actaea racemosa L. -- accepted -- black baneberry, black cohosh, black snakeroot
  Actaea racemosa var. dissecta (A. Gray) J. Compton -- not accepted
  Actaea racemosa var. racemosa L. -- not accepted -- black bugbane
  Actaea rubifolia (Kearney) Kartesz -- not accepted -- Appalachian bugbane
  Actaea rubra (Aiton) Willd. -- accepted -- red baneberry, western baneberry
  Actaea rubra ssp. arguta (Nutt.) Hultén -- not accepted -- red baneberry
  Actaea rubra ssp. rubra (Aiton) Willd. -- not accepted -- red baneberry
  Actaea rubra var. arguta (Nutt.) G. Lawson -- not accepted
  Actaea spicata L. -- accepted -- baneberry
  Actaea spicata ssp. rubra (Aiton) Hultén -- not accepted
  Actaea spicata var. arguta (Nutt.) Torr. -- not accepted
  Actaea X ludovici B. Boivin -- not accepted
  Actaea X ludovicii B. Boivin -- accepted
  Adonis L. -- accepted -- adonis, pheasant's eye
  Adonis aestivalis L. -- accepted -- summer pheasant's eye
  Adonis aestivalis var. citrina Hoffm. -- not accepted
  Adonis annua L. -- accepted -- blooddrops
  Adonis autumnalis L. -- not accepted
  Adonis vernalis L. -- accepted -- spring pheasant's eye
  Anemonastrum narcissiflorum ssp. sibiricum (L.) Á. Löve & D. Löve -- not accepted
  Anemonastrum narcissiflorum ssp. villosissimum (DC.) Á. Löve & D. Löve -- not accepted
  Anemonastrum narcissiflorum ssp. zephyrum (A. Nelson) W.A. Weber -- not accepted
  Anemone L. -- accepted -- anemone
  Anemone acutiloba (DC.) G. Lawson -- accepted -- sharplobe hepatica
  Anemone adamsiana Eastw. -- not accepted
  Anemone americana (DC.) H. Hara -- accepted -- roundlobe hepatica
  Anemone berlandieri Pritz. -- accepted -- tenpetal thimbleweed
  Anemone blanda Schott & Kotschy -- accepted -- Greek thimbleweed
  Anemone canadensis L. -- accepted -- Canada anemone, Canadian anemone
  Anemone caroliniana Walter -- accepted -- Carolina anemone
  Anemone coronaria L. -- accepted -- lilies-of-the-field
  Anemone cylindrica A. Gray -- accepted -- candle anemone, cottonweed
  Anemone cylindrica var. alba Oakes -- not accepted
  Anemone decapetala auct. non Ard. -- not accepted
  Anemone decapetala var. heterophylla (Torr. & A. Gray) Britton & Rusby -- not accepted
  Anemone deltoidea Hook. -- accepted -- Columbian windflower
  Anemone drummondii S. Watson -- accepted -- Drummond's anemone
  Anemone drummondii ssp. drummondii S. Watson -- not accepted -- Drummond's anemone
  Anemone drummondii ssp. heimburgeri Á. Löve & D. Löve -- not accepted -- Heimburger's anemone
  Anemone drummondii var. drummondii S. Watson -- accepted -- Drummond's anemone
  Anemone drummondii var. lithophila (Rydb.) C.L. Hitchc. -- accepted -- Little Belt Mountain thimbleweed
  Anemone edwardsiana Tharp -- accepted -- Edwards Plateau thimbleweed, plateau thimbleweed
  Anemone edwardsiana var. edwardsiana Tharp -- accepted -- Edwards Plateau thimbleweed, Edwards thimbleweed
  Anemone edwardsiana var. petraea Correll -- accepted -- Edge Falls anemone, Edwards Plateau thimbleweed, plateau thimbleweed
  Anemone felix M. Peck -- not accepted
  Anemone globosa (Torr. & A. Gray) Nutt. ex Pritz. -- not accepted
  Anemone grayi Behr & Kellogg -- accepted -- western windflower
  Anemone hepatica L. -- not accepted
  Anemone heterophylla Nutt. ex Torr. & A. Gray (pro. syn.) -- not accepted
  Anemone hudsoniana (DC.) Richardson -- not accepted
  Anemone hupehensis (hort. ex Lem.) Lem. ex Boynton -- accepted -- Japanese thimbleweed
  Anemone hupehensis var. hupehensis (hort. ex Lem.) Lem. ex Boynton -- accepted
  Anemone hupehensis var. japonica (Thunb.) Bowles & Stearn -- accepted -- Japanese thimbleweed
  Anemone lancifolia Pursh -- accepted -- mountain thimbleweed
  Anemone lithophila Rydb. -- not accepted -- Little Belt Mountain thimbleweed
  Anemone ludoviciana Nutt. -- not accepted
  Anemone lyallii Britton -- accepted -- Little Mountain thimbleweed
  Anemone minima DC. -- not accepted
  Anemone multiceps (Greene) Standl. -- accepted -- Porcupine River thimbleweed
  Anemone multifida (Pritz.) Zämelis, non Poir. -- not accepted
  Anemone multifida Poir. -- accepted -- cutleaf anemone, Pacific anemone, red windflower
  Anemone multifida ssp. globosa (Torr. & A. Gray) Torr. & A. Gray -- not accepted
  Anemone multifida ssp. saxicola (B. Boivin) W.A. Weber -- not accepted
  Anemone multifida var. globosa Torr. & A. Gray -- not accepted
  Anemone multifida var. hirsuta C.L. Hitchc. -- not accepted -- Pacific anemone
  Anemone multifida var. hudsoniana DC. -- not accepted -- Hudson's anemone
  Anemone multifida var. multifida Poir. -- accepted -- Pacific anemone
  Anemone multifida var. nowosadii B. Boivin -- not accepted
  Anemone multifida var. richardsiana Fernald -- not accepted -- Richards' anemone
  Anemone multifida var. sansonii B. Boivin -- not accepted -- Sanson's anemone
  Anemone multifida var. saxicola B. Boivin -- accepted -- red windflower
  Anemone multifida var. stylosa (A. Nelson) B.E. Dutton & Keener -- accepted -- Pacific anemone
  Anemone multifida var. tetonensis (Porter ex Britton) C.L. Hitchc. -- accepted -- Pacific anemone
  Anemone narcissiflora L. -- accepted -- narcissus anemone
  Anemone narcissiflora ssp. alaskana Hultén -- not accepted
  Anemone narcissiflora ssp. interior Hultén -- not accepted
  Anemone narcissiflora ssp. sibirica (L.) Hultén -- not accepted
  Anemone narcissiflora ssp. villosissima (DC.) Hultén -- not accepted
  Anemone narcissiflora ssp. zephyra (A. Nelson) Á. Löve, D. Löve, & B.M. Kapoor -- not accepted
  Anemone narcissiflora var. alaskana (Hultén) B. Boivin -- not accepted
  Anemone narcissiflora var. interior (Hultén) B. Boivin -- not accepted
  Anemone narcissiflora var. monantha DC. -- accepted -- narcissus anemone
  Anemone narcissiflora var. narcissiflora L. -- accepted
  Anemone narcissiflora var. villosissima DC. -- accepted -- narcissus anemone
  Anemone narcissiflora var. zephyra (A. Nelson) B.E. Dutton & Keener -- accepted -- narcissus anemone
  Anemone nemorosa L. -- accepted -- European thimbleweed
  Anemone nemorosa var. bifolia (Farw.) B. Boivin -- not accepted
  Anemone nemorosa var. lyallii (Britton) Ulbr. -- not accepted
  Anemone nemorosa var. nemorosa L. -- not accepted -- European thimbleweed
  Anemone nemorosa var. quinquefolia (L.) Pursh -- not accepted
  Anemone nuttalliana DC. -- not accepted
  Anemone occidentalis S. Watson -- accepted -- white pasqueflower
  Anemone okennonii Keener & B.E. Dutton -- accepted -- tuber anemone
  Anemone oregana A. Gray -- accepted -- blue windflower
  Anemone oregana var. felix (M. Peck) C.L. Hitchc. -- accepted -- bog anemone, Felix anemone
  Anemone oregana var. oregana A. Gray -- accepted -- blue windflower
  Anemone parviflora Michx. -- accepted -- smallflowered anemone
  Anemone parviflora var. grandiflora Ulbr. -- not accepted -- smallflowered anemone
  Anemone parviflora var. parviflora Michx. -- not accepted -- smallflowered anemone
  Anemone patens L. -- accepted -- eastern pasqueflower
  Anemone patens var. multifida Pritz. -- accepted -- cutleaf anemone
  Anemone patens var. nuttalliana (DC.) A. Gray -- not accepted
  Anemone patens var. patens L. -- accepted -- eastern pasqueflower
  Anemone patens var. wolfgangiana (Besser) Koch -- not accepted
  Anemone piperi Britton ex Rydb. -- accepted -- Piper's anemone
  Anemone pulsatilla L. -- accepted -- European pasqueflower
  Anemone quinquefolia L. -- accepted -- nightcaps, wood anemone
  Anemone quinquefolia var. bifolia Farw. -- not accepted -- twoleaf anemone
  Anemone quinquefolia var. grayi (Behr & Kellogg) Jeps. -- not accepted
  Anemone quinquefolia var. interior Fernald -- not accepted
  Anemone quinquefolia var. lancifolia (Pursh) Fosberg -- not accepted
  Anemone quinquefolia var. lyallii (Britton) B.L. Rob. -- not accepted
  Anemone quinquefolia var. minima (DC.) Frodin -- accepted -- nightcaps
  Anemone quinquefolia var. minor (Eastw.) Munz -- not accepted
  Anemone quinquefolia var. oregana (A. Gray) B.L. Rob. -- not accepted
  Anemone quinquefolia var. quinquefolia L. -- accepted -- nightcaps
  Anemone quinquefolia var. stylosa (A. Nelson) B.E. Dutton & Keener -- not accepted
  Anemone ranunculoides L. -- accepted -- yellow woodland anemone
  Anemone richardsonii Hook. -- accepted -- yellow thimbleweed
  Anemone riparia Fernald -- not accepted
  Anemone stylosa A. Nelson -- not accepted
  Anemone sylvestris L. -- accepted -- snowdrop windflower
  Anemone tetonensis Porter ex Britton -- not accepted -- Teton anemone
  Anemone trifolia auct. non L. -- not accepted
  Anemone tuberosa Rydb. -- accepted -- desert windflower, tuber anemone
  Anemone tuberosa var. texana Enquist & Crozier -- not accepted -- tuber anemone
  Anemone tuberosa var. tuberosa Rydb. -- not accepted -- tuber anemone
  Anemone virginiana L. -- accepted -- tall thimbleweed, Virginia anemone
  Anemone virginiana var. alba (Oakes) Alph. Wood -- accepted -- tall thimbleweed
  Anemone virginiana var. cylindroidea B. Boivin -- accepted -- tall thimbleweed
  Anemone virginiana var. riparia (Fernald) B. Boivin -- not accepted -- riparian thimbleweed
  Anemone virginiana var. virginiana L. -- accepted -- tall thimbleweed
  Anemone zephyra A. Nelson -- not accepted
  Anemonella thalictroides (L.) Spach -- not accepted
  Anemonidium canadense (L.) Á. Löve & D. Löve -- not accepted
  Anemonidium nemorosum (L.) Holub -- not accepted
  Anemonoides ranunculoides (L.) Holub -- not accepted
  Aquilegia L. -- accepted -- columbine
  Aquilegia australis Small -- not accepted
  Aquilegia barnebyi Munz -- accepted -- oil shale columbine
  Aquilegia brevistyla Hook. -- accepted -- smallflower columbine
  Aquilegia caerulea E. James -- not accepted -- Colorado blue columbine
  Aquilegia caerulea var. alpina A. Nelson -- not accepted -- Colorado alpine columbine
  Aquilegia caerulea var. caerulea E. James -- not accepted -- Colorado blue columbine
  Aquilegia caerulea var. daileyae Eastw. -- not accepted -- Dailey's columbine
  Aquilegia caerulea var. ochroleuca Hook. -- not accepted -- white Colorado columbine
  Aquilegia caerulea var. pinetorum (Tidestr.) Payson ex Kearney & Peebles -- not accepted -- Colorado blue columbine
  Aquilegia canadensis L. -- accepted -- American columbine, Colorado columbine, honeysuckle, meeting-houses, red columbine, wild columbine
  Aquilegia canadensis var. australis (Small) Munz -- not accepted -- Canadian columbine
  Aquilegia canadensis var. coccinea (Small) Munz -- not accepted
  Aquilegia canadensis var. eminens (Greene) B. Boivin -- not accepted
  Aquilegia canadensis var. hybrida Hook. -- not accepted
  Aquilegia canadensis var. latiuscula (Greene) Munz -- not accepted
  Aquilegia chaplinei Standl. ex Payson -- accepted -- Chaplin's golden columbine
  Aquilegia chrysantha A. Gray -- accepted -- golden columbine
  Aquilegia chrysantha var. chaplinei (Standl. ex Payson) E.J. Lott -- not accepted -- Chaplin's golden columbine
  Aquilegia chrysantha var. chrysantha A. Gray -- not accepted -- golden columbine
  Aquilegia chrysantha var. hinckleyana (Munz) E.J. Lott -- not accepted -- Hinckley's columbine, Hinckley's golden columbine
  Aquilegia chrysantha var. rydbergii Munz -- not accepted -- Rydberg's golden columbine
  Aquilegia coccinea Small -- not accepted
  Aquilegia coerulea E. James -- accepted -- Colorado blue columbine
  Aquilegia coerulea var. alpina A. Nelson -- accepted -- Colorado alpine columbine
  Aquilegia coerulea var. coerulea E. James -- accepted -- Colorado blue columbine
  Aquilegia coerulea var. daileyae Eastw. -- not accepted -- Dailey's columbine
  Aquilegia coerulea var. ochroleuca Hook. -- accepted -- white Colorado columbine
  Aquilegia coerulea var. pinetorum (Tidestr.) Payson ex Kearney & Peebles -- accepted -- Colorado blue columbine
  Aquilegia desertorum (M.E. Jones) Cockerell ex A. Heller -- accepted -- desert columbine
  Aquilegia desolaticola S.L. Welsh & N.D. Atwood -- accepted -- desolation columbine
  Aquilegia elegantula Greene -- accepted -- western red columbine
  Aquilegia eximia Van Houtte ex Planch. -- accepted -- Van Houtte's columbine
  Aquilegia flabellata Siebold & Zucc. -- accepted -- fan columbine
  Aquilegia flavescens S. Watson -- accepted -- yellow columbine
  Aquilegia flavescens var. flavescens S. Watson -- not accepted -- yellow columbine
  Aquilegia flavescens var. miniata A. Nelson & J.F. Macbr. -- not accepted -- yellow columbine
  Aquilegia flavescens var. rubicunda (Tidestr.) S.L. Welsh -- not accepted -- yellow columbine
  Aquilegia formosa Fisch. ex DC. -- accepted -- crimson columbine, western columbine
  Aquilegia formosa var. communis B. Boivin -- not accepted
  Aquilegia formosa var. flavescens (S. Watson) M. Peck -- not accepted
  Aquilegia formosa var. formosa Fisch. ex DC. -- accepted -- crimson columbine
  Aquilegia formosa var. fosteri S.L. Welsh -- not accepted
  Aquilegia formosa var. hypolasia (Greene) Munz -- accepted
  Aquilegia formosa var. megalantha B. Boivin -- not accepted
  Aquilegia formosa var. pauciflora (Greene) Boothman -- not accepted
  Aquilegia formosa var. truncata (Fisch. & C.A. Mey.) M.E. Jones -- accepted
  Aquilegia formosa var. wawawensis (Payson) H. St. John -- not accepted -- Wawaw columbine
  Aquilegia fosteri (S.L. Welsh) S.L. Welsh -- not accepted
  Aquilegia grahamii S.L. Welsh & Goodrich -- accepted -- Graham's columbine
  Aquilegia hinckleyana Munz -- accepted -- Hinckley's golden columbine
  Aquilegia jonesii Parry -- accepted -- Jones' columbine
  Aquilegia jonesii var. elatior (Standl.) Boothman -- not accepted -- blue limestone columbine
  Aquilegia jonesii var. jonesii Parry -- not accepted -- Jones' columbine
  Aquilegia laramiensis A. Nelson -- accepted -- Laramie columbine
  Aquilegia latiuscula Greene -- not accepted
  Aquilegia longissima A. Gray ex S. Watson -- accepted -- long spur columbine, longspur columbine
  Aquilegia loriae S.L. Welsh & N.D. Atwood -- accepted -- Lori's columbine
  Aquilegia micrantha Eastw. -- accepted -- Mancos columbine
  Aquilegia micrantha var. mancosana Eastw. -- not accepted -- Mancos columbine
  Aquilegia micrantha var. micrantha Eastw. -- not accepted -- Mancos columbine
  Aquilegia mohavensis Munz -- not accepted
  Aquilegia phoenicantha Cory -- not accepted
  Aquilegia pubescens Coville -- accepted -- Sierra columbine
  Aquilegia rubicunda Tidestr. -- not accepted
  Aquilegia saximontana Rydb. -- accepted -- Rocky Mountain blue columbine
  Aquilegia scopulorum Tidestr. -- accepted -- blue columbine, Utah columbine
  Aquilegia scopulorum var. calcarea (M.E. Jones) Munz -- not accepted -- Utah columbine
  Aquilegia scopulorum var. scopulorum Tidestr. -- not accepted -- Utah columbine
  Aquilegia shockleyi Eastw. -- accepted
  Aquilegia triternata Payson -- not accepted -- Chiricahua Mountain columbine
  Aquilegia vulgaris L. -- accepted -- European columbine
  Atragene alpina L. -- not accepted
  Atragene americana Sims -- not accepted
  Atragene columbiana Nutt. -- not accepted
  Atragene occidentalis Hornem. -- not accepted
  Batrachium aquatile (L.) Dumort. -- not accepted
  Batrachium circinatum (Sibth.) Rchb. -- not accepted
  Batrachium circinatum ssp. subrigidum (W. Drew) Á. Löve & D. Löve -- not accepted
  Batrachium confervoides Fr. -- not accepted
  Batrachium flaccidum (Pers.) Rupr. -- not accepted
  Batrachium hederaceum (L.) Gray -- not accepted
  Batrachium longirostre (Godr.) F.W. Schultz -- not accepted
  Batrachium porteri (Britton) Britton -- not accepted
  Batrachium trichophyllum (Chaix) F.W. Schultz -- not accepted
  Beckwithia andersonii (A. Gray) Jeps. -- not accepted
  Beckwithia glacialis (L.) Á. Löve & D. Löve -- not accepted
  Beckwithia glacialis ssp. camissonis (Schltdl.) Á. Löve & D. Löve -- not accepted
  Beckwithia glacialis ssp. chamissonis (Schltdl.) Á. Löve & D. Löve -- not accepted
  Caltha L. -- accepted -- marsh marigold
  Caltha arctica R. Br. -- not accepted
  Caltha asarifolia DC. -- not accepted
  Caltha biflora DC. -- not accepted
  Caltha biflora ssp. howellii (Huth) Abrams -- not accepted
  Caltha biflora var. rotundifolia (Huth) C.L. Hitchc. -- not accepted
  Caltha chelidonii Greene -- not accepted
  Caltha howellii Huth -- not accepted
  Caltha leptosepala DC. -- accepted -- elkslip marshmarigold, slendersepal marshmarigold, white marsh marigold, white marsh-marigold, white marshmarigold
  Caltha leptosepala ssp. biflora (DC.) P.G. Smit -- not accepted
  Caltha leptosepala ssp. howellii (Huth) P.G. Smit -- not accepted -- Howell's marsh marigold, Howell's marshmarigold
  Caltha leptosepala ssp. leptosepala DC. -- not accepted -- white marsh marigold, white marsh-marigold, white marshmarigold
  Caltha leptosepala ssp. leptosepala var. leptosepala DC. -- not accepted -- white marsh marigold, white marshmarigold
  Caltha leptosepala ssp. leptosepala var. sulfurea C.L. Hitchc. -- not accepted -- sulphur marsh marigold
  Caltha leptosepala var. biflora (DC.) G. Lawson -- not accepted
  Caltha leptosepala var. leptosepala DC. -- not accepted -- white marsh marigold
  Caltha leptosepala var. rotundifolia Huth -- not accepted
  Caltha leptosepala var. sulfurea C.L. Hitchc. -- not accepted -- sulphur marsh marigold
  Caltha minor ssp. arctica (R. Br.) Á. Löve & D. Löve -- not accepted
  Caltha natans Pall. -- accepted -- floating marsh marigold
  Caltha natans var. arctica (R. Br.) Hultén -- not accepted
  Caltha natans var. asarifolia (DC.) Huth -- not accepted
  Caltha novae-zelandiae Hook. f. -- accepted
  Caltha obtusa Cheeseman -- accepted
  Caltha palustris L. -- accepted -- yellow marsh marigold, yellow marsh-marigold, yellow marshmarigold
  Caltha palustris ssp. arctica (R. Br.) Hultén -- not accepted
  Caltha palustris ssp. asarifolia (DC.) Hultén -- not accepted
  Caltha palustris var. asarifolia (DC.) Huth -- not accepted
  Caltha palustris var. flabellifolia (Pursh) Torr. & A. Gray -- not accepted
  Caltha palustris var. palustris L. -- not accepted -- yellow marsh marigold, yellow marsh-marigold
  Caltha palustris var. radicans (T.F. Forst.) Beck -- not accepted -- yellow marsh marigold
  Caltha palustris var. radicans (T.F. Forst.) Huth -- not accepted
  Caltha palustris var. zetlandica Beeby -- not accepted
  Caltha radicans T.F. Forst. -- not accepted
  Caltha zetlandica (Beeby) Dörfl. -- not accepted
  Ceratocephala Moench -- accepted -- butterwort, curveseed butterwort
  Ceratocephala falcata auct. non (L.) Pers. -- not accepted
  Ceratocephala orthoceras DC. -- not accepted
  Ceratocephala testiculata (Crantz) Roth -- not accepted -- bur buttercup, curve-seed-butterwort, curveseed butterwort
  Chrysocyathus vernalis (L.) Holub -- not accepted
  Cimicifuga Wernisch. -- not accepted -- bugbane
  Cimicifuga americana Michx. -- not accepted -- mountain bugbane
  Cimicifuga arizonica S. Watson -- not accepted -- Arizona bugbane
  Cimicifuga cordifolia Pursh -- not accepted
  Cimicifuga cordifolia (DC.) Torr. & A. Gray -- not accepted
  Cimicifuga elata Nutt. -- not accepted -- tall bugbane
  Cimicifuga laciniata S. Watson -- not accepted -- Mt. Hood bugbane
  Cimicifuga racemosa (L.) Nutt. -- not accepted -- black bugbane, black cohosh, black snakeroot
  Cimicifuga racemosa var. cordifolia (DC.) A. Gray -- not accepted
  Cimicifuga racemosa var. dissecta A. Gray -- not accepted
  Cimicifuga rubifolia Kearney -- not accepted -- Appalachian bugbane
  Clematis L. -- accepted -- clematis, leather flower
  Clematis addisonii Britton -- accepted -- Addison's leather flower, Addison's virgin's bower
  Clematis albicoma Wherry -- accepted -- white-haired leatherflower, whitehair leather flower
  Clematis albicoma var. coactilis Fernald -- not accepted
  Clematis alpina (L.) Mill. -- accepted -- alpine virginsbower
  Clematis apiifolia DC. -- accepted
  Clematis armandii Franch. -- accepted
  Clematis aurea A. Nelson & J.F. Macbr. -- not accepted
  Clematis baldwinii Torr. & A. Gray -- accepted -- pine hyacinth
  Clematis baldwinii var. baldwinii Torr. & A. Gray -- not accepted -- pine hyacinth
  Clematis baldwinii var. latiuscula R.W. Long -- not accepted -- pine hyacinth
  Clematis beadlei (Small) R.O. Erickson -- not accepted
  Clematis bigelovii Torr. -- accepted -- Bigelow's clematis, Bigelow's leather flower
  Clematis brachiata Thunb. -- accepted -- traveler's-joy
  Clematis brevifolia Howell -- not accepted
  Clematis campaniflora Brot. -- accepted -- bellflower clematis, clematis
  Clematis carrizoensis D. Estes -- accepted -- Carrizo sands leather flower, sand clematis
  Clematis catesbyana Pursh -- accepted -- satincurls
  Clematis cirrhosa L. -- accepted
  Clematis coactilis (Fernald) Keener -- accepted -- Virginia whitehair leather flower
  Clematis coccinea Engelm. -- not accepted
  Clematis columbiana (Nutt.) Torr. & A. Gray -- accepted -- Columbian virgin's-bower, rock clematis
  Clematis columbiana var. columbiana (Nutt.) Torr. & A. Gray -- accepted -- Columbian virginsbower, rock clematis
  Clematis columbiana var. dissecta C.L. Hitchc. -- not accepted
  Clematis columbiana var. tenuiloba (A. Gray) J.S. Pringle -- accepted -- Columbian virgin's-bower, rock clematis
  Clematis crispa L. -- accepted -- curly virginsbower, swamp leather flower
  Clematis crispa var. walteri Pursh -- not accepted
  Clematis dictyota Greene -- not accepted
  Clematis dioica L. -- accepted -- cabellos de angel
  Clematis dioscoreifolia H. Lév. & Vaniot -- not accepted
  Clematis dioscoreifolia var. robusta (Carričre) Rehder -- not accepted
  Clematis drummondii Torr. & A. Gray -- accepted -- Drummond's clematis, old man's beard
  Clematis filifera Benth. -- not accepted
  Clematis flammula L. -- accepted -- fragrant clematis
  Clematis florida Thunb. -- accepted -- Asian virginsbower
  Clematis fremontii S. Watson -- accepted -- Fremont's leather flower
  Clematis fremontii var. riehlii R.O. Erickson -- not accepted
  Clematis fusca Turcz. -- accepted
  Clematis gattingeri Small -- not accepted
  Clematis glaucophylla Small -- accepted -- whiteleaf leather flower
  Clematis henryi Oliv. -- accepted
  Clematis heracleifolia DC. -- accepted -- hyacinth-flower clematis
  Clematis hirsuta Guill. & Perr. -- accepted
  Clematis hirsutissima Pursh -- accepted -- hairy clematis, sugarbowls
  Clematis hirsutissima var. arizonica (A. Heller) R.O. Erickson -- not accepted -- Arizona clematis
  Clematis hirsutissima var. hirsutissima Pursh -- accepted -- hairy clematis
  Clematis hirsutissima var. scottii (Porter) R.O. Erickson -- accepted -- Scott's clematis
  Clematis incisodentata A. Rich. -- not accepted
  Clematis integrifolia L. -- accepted
  Clematis koreana Kom. -- accepted
  Clematis lasiantha Nutt. -- accepted -- pipestem clematis
  Clematis ligusticifolia Nutt. -- accepted -- hierba de chivo, old-man's-beard, virgin's-bower, virgins bower, virginsbower, western white clematis
  Clematis ligusticifolia var. brevifolia Nutt. -- not accepted -- western white clematis
  Clematis ligusticifolia var. californica S. Watson -- not accepted -- California clematis
  Clematis ligusticifolia var. ligusticifolia Nutt. -- not accepted -- deciduous traveler's-joy, western white clematis, white clematis
  Clematis macropetala Ledeb. -- accepted
  Clematis mandshurica Rupr. -- not accepted
  Clematis maximowicziana Franch. & Sav. -- not accepted
  Clematis micrantha Small -- not accepted -- old man's beard
  Clematis microphylla DC. -- accepted -- headachevine, small-leaf clematis
  Clematis microphylla var. leptophylla F. Muell. ex Benth. -- accepted
  Clematis montana Buch.-Ham. ex DC. -- accepted
  Clematis morefieldii Kral -- accepted -- Huntsville vasevine, Morefield's leather flower
  Clematis neomexicana Woot. & Standl. -- not accepted
  Clematis occidentalis (Hornem.) DC. -- accepted -- western blue virginsbower
  Clematis occidentalis ssp. grosseserrata (Rydb.) Roy L. Taylor & MacBryde -- not accepted
  Clematis occidentalis var. dissecta (C.L. Hitchc.) J.S. Pringle -- accepted -- western blue virginsbower
  Clematis occidentalis var. grosseserrata (Rydb.) J.S. Pringle -- accepted -- western blue virginsbower
  Clematis occidentalis var. occidentalis (Hornem.) DC. -- accepted -- western blue virginsbower
  Clematis ochroleuca Aiton -- accepted -- curlyheads
  Clematis orientalis L. -- accepted -- Chinese clematis, oriental virginsbower
  Clematis orientalis var. tangutica Maxim. -- not accepted
  Clematis palmeri Rose -- not accepted -- Palmer's clematis, Palmer's leather flower
  Clematis paniculata Thunb. -- not accepted
  Clematis pauciflora Nutt. -- accepted -- ropevine clematis
  Clematis pitcheri Torr. & A. Gray -- accepted -- bluebill, Pitcher's clematis, Pitcher's virginsbower
  Clematis pitcheri var. dictyota (Greene) W.M. Dennis -- accepted -- bluebill, Pitcher's clematis
  Clematis pitcheri var. filifera (Benth.) B.L. Rob. ex A. Gray -- not accepted
  Clematis pitcheri var. pitcheri Torr. & A. Gray -- accepted -- bluebill, Pitcher's clematis
  Clematis pseudoalpina (Kuntze) A. Nelson -- not accepted
  Clematis recta L. -- accepted -- ground virginsbower
  Clematis recta var. mandshurica (Rupr.) Maxim. -- not accepted
  Clematis reticulata Walter -- accepted -- netleaf leather flower
  Clematis scottii Porter -- not accepted
  Clematis socialis Kral -- accepted -- Alabama leather flower
  Clematis songarica Bunge -- accepted
  Clematis suksdorfii B.L. Rob. -- not accepted
  Clematis tangutica (Maxim.) Korsh. -- accepted -- golden virginsbower
  Clematis tangutica var. tangutica (Maxim.) Korsh. -- accepted
  Clematis tenuiloba A. Gray -- not accepted
  Clematis terniflora DC. -- accepted -- leatherleaf clematis, sweet autumn virginsbower, yam-leaved clematis
  Clematis terniflora var. mandshurica (Rupr.) Ohwi -- not accepted
  Clematis terniflora var. robusta (Carričre) Tamura -- not accepted
  Clematis terniflora var. terniflora DC. -- not accepted -- sweet autumn virginsbower
  Clematis texensis Buckley -- accepted -- scarlet leather flower, Texas clematis
  Clematis versicolor Small ex Rydb. -- accepted -- manycolored virginsbower, pale leather flower
  Clematis verticillaris DC. -- not accepted
  Clematis verticillaris var. cacuminis Fernald -- not accepted
  Clematis verticillaris var. columbiana (Nutt.) A. Gray -- not accepted
  Clematis verticillaris var. grandiflora B. Boivin -- not accepted
  Clematis viorna L. -- accepted -- vasevine
  Clematis viorna var. flaccida (Small) Erickson -- not accepted
  Clematis viornioides Britton -- not accepted
  Clematis virginiana L. -- accepted -- devil's darning needles, devil's-darning-needles, virgin's bower, Virginia bower
  Clematis virginiana var. missouriensis (Rydb.) E.J. Palmer & Steyerm. -- not accepted
  Clematis vitalba L. -- accepted -- evergreen clematis, old-man's-beard, traveler's-joy
  Clematis viticaulis E.S. Steele -- accepted -- Millboro leather flower, Millboro leatherflower
  Clematis viticella L. -- accepted -- Italian leather flower
  Clematis welwitschii Hiern ex Kuntze -- accepted
  Clematis X jackmanii T. Moore -- accepted -- Jackman's clematis
  Consolida Gray -- accepted -- knight's-spur
  Consolida ajacis (L.) Schur -- accepted -- doubtful knight's spur, doubtful knight's-spur, rocket larkspur
  Consolida ambigua (L.) P.W. Ball & Heywood -- not accepted
  Consolida orientalis (J. Gay) Schrödinger -- accepted -- oriental knight's spur, oriental knight's-spur
  Consolida pubescens (DC.) Soó -- accepted -- hairy knight's-spur
  Consolida regalis Gray -- accepted -- royal knight's-spur
  Consolida tenuissima (Sm.) Soó -- accepted -- long knight's-spur
  Coptidium lapponicum (L.) Gand. -- not accepted
  Coptis Salisb. -- accepted -- goldthread
  Coptis aspleniifolia Salisb. -- accepted -- fernleaf goldthread
  Coptis groenlandica (Oeder) Fernald -- not accepted
  Coptis laciniata A. Gray -- accepted -- Oregon goldthread
  Coptis occidentalis (Nutt.) Torr. & A. Gray -- accepted -- Idaho goldthread
  Coptis trifolia (L.) Salisb. -- accepted -- threeleaf goldthread
  Coptis trifolia ssp. groenlandica (Oeder) Hultén -- not accepted -- threeleaf goldthread
  Coptis trifolia ssp. trifolia (L.) Salisb. -- not accepted -- threeleaf goldthread
  Coptis trifolia var. groenlandica (Oeder) Fassett -- not accepted
  Coriflora addisonii (Britton) W.A. Weber -- not accepted
  Coriflora albicoma (Wherry) W.A. Weber -- not accepted
  Coriflora baldwinii (Torr. & A. Gray) W.A. Weber -- not accepted
  Coriflora beadlei (Small) W.A. Weber -- not accepted
  Coriflora bigelovii (Torr.) W.A. Weber -- not accepted
  Coriflora crispa (L.) W.A. Weber -- not accepted
  Coriflora fremontii (James) W.A. Weber -- not accepted
  Coriflora gattingeri (Small) W.A. Weber -- not accepted
  Coriflora glaucophylla (Small) W.A. Weber -- not accepted
  Coriflora hirsutissima (Pursh) W.A. Weber -- not accepted
  Coriflora morefieldii (Kral) W.A. Weber -- not accepted
  Coriflora ochroleuca (Aiton) W.A. Weber -- not accepted
  Coriflora palmeri (Rose) W.A. Weber -- not accepted
  Coriflora pitcheri (Torr. & A. Gray) W.A. Weber -- not accepted
  Coriflora reticulata (Walter) W.A. Weber -- not accepted
  Coriflora scottii (Porter) W.A. Weber -- not accepted
  Coriflora texensis (Buckley) W.A. Weber -- not accepted
  Coriflora versicolor (Small ex Rydb.) W.A. Weber -- not accepted
  Coriflora viorna (L.) W.A. Weber -- not accepted
  Coriflora viticaulis (E.S. Steele) W.A. Weber -- not accepted
  Cyrtorhyncha cymbalaria ssp. alpina (Hook.) Á. Löve & D. Löve -- not accepted
  Cyrtorhyncha ranunculina Nutt. -- not accepted
  Delphinium L. -- accepted -- larkspur
  Delphinium ajacis L. -- not accepted
  Delphinium alabamicum Kral -- accepted -- Alabama larkspur
  Delphinium albescens Rydb. -- not accepted
  Delphinium alpestre Rydb. -- accepted -- Colorado larkspur
  Delphinium amabile Tidestr. -- not accepted
  Delphinium amabile ssp. apachense (Eastw.) Ewan -- not accepted
  Delphinium amabile ssp. clarianum Ewan -- not accepted
  Delphinium amabile ssp. pallidum (Munz) Ewan -- not accepted
  Delphinium ambiguum L. -- not accepted
  Delphinium amplibracteatum Woot. -- not accepted
  Delphinium andersoni A. Gray -- not accepted
  Delphinium andersoni var. andersoni A. Gray -- not accepted
  Delphinium andersonii A. Gray -- accepted -- Anderson's larkspur
  Delphinium andersonii ssp. andersonii A. Gray -- not accepted -- Anderson's larkspur
  Delphinium andersonii ssp. cognatum (Greene) Ewan -- not accepted
  Delphinium andersonii var. cognatum (Greene) R.J. Davis -- not accepted
  Delphinium andersonii var. scaposum (Greene) S.L. Welsh -- not accepted
  Delphinium andesicola Ewan -- accepted -- Chiricahua Mountain larkspur
  Delphinium andesicola ssp. amplum (Ewan) Ewan -- not accepted -- Chiricahua Mountain larkspur
  Delphinium andesicola ssp. andesicola Ewan -- not accepted -- Chiricahua Mountain larkspur
  Delphinium antoninum Eastw. -- accepted -- Tracy's larkspur
  Delphinium apachense Eastw. -- not accepted
  Delphinium azureum Michx. -- not accepted
  Delphinium azureum var. nortonianum (Mack. & Bush) E.J. Palmer & Steyerm. -- not accepted
  Delphinium bakeri Ewan -- accepted -- Baker's delphinium, Baker's larkspur
  Delphinium barbeyi (Huth) Huth -- accepted -- Barbey larkspur, subalpine larkspur, tall larkspur
  Delphinium basalticum M.J. Warnock -- accepted -- basalt larkspur
  Delphinium bicolor Nutt. -- accepted -- little larkspur
  Delphinium bicolor ssp. bicolor Nutt. -- accepted -- little larkspur
  Delphinium bicolor ssp. calcicola M.J. Warnock & Vanderhorst -- accepted -- little larkspur
  Delphinium blochmaniae Greene -- not accepted
  Delphinium brachycentrum Ledeb. -- accepted -- northern larkspur
  Delphinium brownii Rydb. -- not accepted
  Delphinium burkei ssp. distichiflorum (Hook.) Ewan -- not accepted
  Delphinium burkei var. distichiflorum (Hook.) H. St. John -- not accepted
  Delphinium californicum Torr. & A. Gray -- accepted -- California larkspur
  Delphinium californicum ssp. californicum Torr. & A. Gray -- accepted -- California larkspur
  Delphinium californicum ssp. interius (Eastw.) Ewan -- accepted -- California larkspur, Hospital Canyon larkspur
  Delphinium californicum var. interius Eastw. -- not accepted
  Delphinium caprorum Ewan -- not accepted
  Delphinium cardinale Hook. -- accepted -- scarlet larkspur
  Delphinium carolinianum Walter -- accepted -- Carolina larkspur
  Delphinium carolinianum ssp. calciphilum M.J. Warnock -- accepted -- Carolina larkspur
  Delphinium carolinianum ssp. carolinianum Walter -- accepted -- Carolina larkspur
  Delphinium carolinianum ssp. penardii (Huth) M.J. Warnock -- not accepted
  Delphinium carolinianum ssp. vimineum (D. Don) M.J. Warnock -- accepted -- Carolina larkspur
  Delphinium carolinianum ssp. virescens (Nutt.) R.E. Brooks -- accepted -- Carolina larkspur, plains larkspur, white larkspur
  Delphinium carolinianum var. crispum L.M. Perry -- not accepted
  Delphinium carolinianum var. nortonianum (Mack. & Bush) L.M. Perry -- not accepted
  Delphinium chamissonis Pritz. ex Walp. -- not accepted -- Chamisso's larkspur
  Delphinium cognatum Greene -- not accepted
  Delphinium consolida L. -- not accepted
  Delphinium cucullatum A. Nelson -- not accepted
  Delphinium cuyamacae Abrams -- not accepted
  Delphinium cyanoreios Piper -- not accepted
  Delphinium decorum Fisch. & C.A. Mey. -- accepted -- coastal larkspur
  Delphinium decorum ssp. decorum Fisch. & C.A. Mey. -- accepted -- coastal larkspur
  Delphinium decorum ssp. tracyi Ewan -- accepted -- coastal larkspur
  Delphinium decorum var. patens (Benth.) A. Gray -- not accepted
  Delphinium depauperatum Nutt. -- accepted -- slim larkspur, wand larkspur
  Delphinium distichum Geyer ex Hook. -- accepted -- twospike larkspur
  Delphinium diversicolor Rydb. -- not accepted
  Delphinium diversifolium Greene -- not accepted
  Delphinium diversifolium ssp. harneyense Ewan -- not accepted
  Delphinium diversifolium var. harneyense (Ewan) R.J. Davis -- not accepted
  Delphinium elatum L. -- accepted -- candle larkspur
  Delphinium elatum var. occidentale S. Watson -- not accepted
  Delphinium exaltatum Aiton -- accepted -- tall larkspur
  Delphinium exaltatum var. barbeyi Huth -- not accepted
  Delphinium formosum Boiss. & A. Huet. -- accepted -- hardy larkspur
  Delphinium geraniifolium Rydb. -- accepted -- Clark Valley larkspur
  Delphinium geyeri Greene -- accepted -- Geyer's larkspur
  Delphinium geyeri var. wootonii (Rydb.) K.C. Davis -- not accepted
  Delphinium glareosum Greene -- accepted -- Olympic larkspur
  Delphinium glareosum ssp. caprorum (Ewan) Ewan -- not accepted -- Olympic larkspur
  Delphinium glareosum ssp. glareosum Greene -- not accepted -- Olympic larkspur
  Delphinium glareosum var. caprorum (Ewan) W.H. Baker -- not accepted
  Delphinium glaucescens Rydb. -- accepted -- glaucus larkspur, smooth larkspur
  Delphinium glaucum S. Watson -- accepted -- mountain larkspur, Sierra larkspur, tower larkspur
  Delphinium gracilentum Greene -- accepted -- pine forest larkspur
  Delphinium grandiflorum L. -- accepted -- Siberian larkspur
  Delphinium greenei Eastw. -- not accepted
  Delphinium gypsophilum Ewan -- accepted -- Pinoche Creek larkspur
  Delphinium gypsophilum ssp. gypsophilum Ewan -- accepted -- Pinoche Creek larkspur
  Delphinium gypsophilum ssp. parviflorum F.H. Lewis & Epling -- accepted -- Pinoche Creek larkspur
  Delphinium hansenii (Greene) Greene -- accepted -- Eldorado larkspur
  Delphinium hansenii ssp. arcuatum (Greene) Ewan -- not accepted
  Delphinium hansenii ssp. ewanianum M.J. Warnock -- accepted -- Ewan's larkspur
  Delphinium hansenii ssp. hansenii (Greene) Greene -- accepted -- Eldorado larkspur
  Delphinium hansenii ssp. kernense (Davidson) Ewan -- accepted -- Kern larkspur
  Delphinium hansenii var. kernense Davidson -- not accepted
  Delphinium hesperium A. Gray -- accepted -- foothill larkspur
  Delphinium hesperium ssp. cuyamacae (Abrams) F.H. Lewis & Epling -- accepted -- Cuyamaca larkspur, foothill larkspur
  Delphinium hesperium ssp. hesperium A. Gray -- accepted -- foothill larkspur
  Delphinium hesperium ssp. pallescens (Ewan) F.H. Lewis & Epling -- accepted -- foothill larkspur
  Delphinium hesperium var. hansenii Greene -- not accepted
  Delphinium hesperium var. recurvatum (Greene) K.C. Davis -- not accepted
  Delphinium hesperium var. seditiosum Jeps. -- not accepted
  Delphinium hutchinsoniae Ewan -- accepted -- Hutchinson's delphinium, Monterey larkspur
  Delphinium inopinum (Jeps.) F.H. Lewis & Epling -- accepted -- unexpected larkspur
  Delphinium kinkiense Munz -- not accepted -- San Clemente Island larkspur
  Delphinium laxiflorum DC. -- accepted
  Delphinium leucophaeum Greene -- not accepted
  Delphinium lineapetalum Ewan -- accepted -- thinpetal larkspur
  Delphinium lineapetalum ssp. klickitatense Ewan -- not accepted
  Delphinium luporum Greene -- not accepted
  Delphinium luteum A. Heller -- accepted -- yellow larkspur
  Delphinium macrophyllum Wooton -- not accepted
  Delphinium madrense S. Watson -- accepted -- Sierra Madre larkspur
  Delphinium menziesii DC. -- accepted -- Menzies' larkspur
  Delphinium menziesii ssp. menziesii DC. -- accepted -- Menzies' larkspur
  Delphinium menziesii ssp. pallidum M.J. Warnock -- accepted -- Menzies' larkspur
  Delphinium menziesii ssp. pyramidale Ewan -- not accepted
  Delphinium menziesii var. pyramidale (Ewan) C.L. Hitchc. -- not accepted
  Delphinium multiplex (Ewan) C.L. Hitchc. -- accepted -- Kittitas larkspur
  Delphinium nelsonii Greene -- not accepted
  Delphinium nelsonii ssp. utahense (S. Watson) Ewan -- not accepted
  Delphinium newtonianum Dw. Moore -- accepted -- Newton's larkspur
  Delphinium novomexicanum Woot. -- accepted -- White Mountain larkspur
  Delphinium nudicaule Torr. & A. Gray -- accepted -- red larkspur
  Delphinium nuttallianum Pritz. ex Walp. -- accepted -- low larkspur, Nuttall's larkspur, two-lobe larkspur, twolobe larkspur
  Delphinium nuttallianum var. fulvum C.L. Hitchc. -- not accepted -- yellow larkspur
  Delphinium nuttallianum var. levicaule C.L. Hitchc. -- not accepted
  Delphinium nuttallianum var. lineapetalum (Ewan) C.L. Hitchc. -- not accepted -- Nuttal's larkspur
  Delphinium nuttallianum var. nuttallianum Pritz. ex Walp. -- not accepted -- Nuttal's larkspur
  Delphinium nuttallianum var. pilosa C.L. Hitchc. -- not accepted
  Delphinium nuttallii A. Gray -- accepted -- upland larkspur
  Delphinium nuttallii ssp. nuttallii A. Gray -- accepted -- upland larkspur
  Delphinium nuttallii ssp. ochroleucum (Nutt.) M.J. Warnock -- accepted -- upland larkspur
  Delphinium occidentale ssp. cucullatum (A. Nelson) Ewan -- not accepted
  Delphinium occidentale ssp. occidentale (S. Watson) S. Watson -- not accepted -- duncecap larkspur
  Delphinium occidentale ssp. quercicola Ewan -- not accepted
  Delphinium occidentale var. barbeyi (Huth) S.L. Welsh -- not accepted
  Delphinium occidentale var. cucullatum (A. Nelson) R.J. Davis -- not accepted
  Delphinium oreganum Howell -- not accepted
  Delphinium orientale J. Gay -- not accepted
  Delphinium parishii A. Gray -- accepted -- desert larkspur
  Delphinium parishii ssp. pallidum (Munz) M.J. Warnock -- accepted -- pallid larkspur
  Delphinium parishii ssp. parishii A. Gray -- accepted -- Parish's desert larkspur, Parish's larkspur
  Delphinium parishii ssp. purpureum F.H. Lewis & Epling -- not accepted
  Delphinium parishii ssp. subglobosum (Wiggins) F.H. Lewis & Epling -- accepted -- oceanblue larkspur
  Delphinium parishii var. inopinum Jeps. -- not accepted
  Delphinium parishii var. pallidum Munz -- not accepted
  Delphinium parryi A. Gray -- accepted -- San Bernardino larkspur
  Delphinium parryi ssp. blochmaniae (Greene) F.H. Lewis & Epling -- accepted -- Blochman's larkspur, dune larkspur
  Delphinium parryi ssp. eastwoodiae Ewan -- accepted -- Eastwood's larkspur
  Delphinium parryi ssp. maritimum (Davidson) M.J. Warnock -- accepted -- seaside larkspur
  Delphinium parryi ssp. parryi A. Gray -- accepted -- San Bernardino larkspur
  Delphinium parryi ssp. purpureum (F.H. Lewis & Epling) M.J. Warnock -- accepted -- San Bernardino larkspur
  Delphinium parryi ssp. seditiosum (Jeps.) Ewan -- not accepted
  Delphinium parryi var. montanum Munz -- not accepted
  Delphinium patens Benth. -- accepted -- zigzag larkspur
  Delphinium patens ssp. greenei (Eastw.) Ewan -- not accepted
  Delphinium patens ssp. hepaticoideum Ewan -- accepted -- zigzag larkspur
  Delphinium patens ssp. montanum (Munz) Ewan -- accepted -- zigzag larkspur
  Delphinium patens ssp. patens Benth. -- accepted -- zigzag larkspur
  Delphinium penardii Huth -- not accepted
  Delphinium polycladon Eastw. -- accepted -- marsh larkspur, mountain marsh larkspur
  Delphinium pratense Eastw. -- not accepted
  Delphinium purpusii Brandegee -- accepted -- Kern County larkspur
  Delphinium ramosum Rydb. -- accepted -- mountain larkspur
  Delphinium ramosum var. alpestre (Rydb.) W.A. Weber -- not accepted
  Delphinium recurvatum Greene -- accepted -- Byron larkspur, recurved larkspur
  Delphinium robustum Rydb. -- accepted -- Wahatoya Creek larkspur
  Delphinium roseum A. Heller -- not accepted
  Delphinium ruthiae A. Nelson -- not accepted
  Delphinium sapellonis Cockerell -- accepted -- Sapello Canyon larkspur
  Delphinium scaposum Greene -- accepted -- barestem larkspur, tall mountain larkspur
  Delphinium scopulorum auct. non A. Gray -- not accepted -- Rocky Mountain larkspur
  Delphinium scopulorum A. Gray -- accepted -- Rocky Mountain larkspur
  Delphinium scopulorum ssp. occidentale (S. Watson) Abrams -- not accepted
  Delphinium scopulorum var. glaucum (S. Watson) A. Gray -- not accepted
  Delphinium scopulorum var. luporum (Greene) Jeps. -- not accepted
  Delphinium scopulorum var. stachydeum A. Gray -- not accepted
  Delphinium sierrae-blancae Woot. -- not accepted
  Delphinium sierrae-blancae ssp. amplum Ewan -- not accepted
  Delphinium sonnei Greene -- not accepted
  Delphinium stachydeum (A. Gray) Tidestr. -- accepted -- spiked larkspur
  Delphinium strictum A. Nelson -- not accepted
  Delphinium strictum var. distichiflorum (Hook.) H. St. John -- not accepted
  Delphinium subglobosum Wiggins -- not accepted
  Delphinium sutherlandii M.J. Warnock -- accepted -- Sutherland's larkspur
  Delphinium tenuisectum Greene -- accepted -- carrotleaf larkspur
  Delphinium tenuisectum ssp. amplibracteatum (Woot.) Ewan -- not accepted
  Delphinium treleasei Bush ex K.C. Davis -- accepted -- glade larkspur
  Delphinium tricorne Michx. -- accepted -- dwarf larkspur, rock larkspur
  Delphinium trolliifolium A. Gray -- accepted -- Columbian larkspur
  Delphinium uliginosum Curran -- accepted -- swamp larkspur
  Delphinium umatillense Ewan -- not accepted
  Delphinium umbraculorum F.H. Lewis & Epling -- accepted -- umbrella larkspur
  Delphinium variegatum Torr. & A. Gray -- accepted -- royal larkspur
  Delphinium variegatum ssp. apiculatum (Greene) Ewan -- not accepted -- royal larkspur
  Delphinium variegatum ssp. kinkiense (Munz) M.J. Warnock -- accepted -- royal larkspur, San Clemente Island larkspur
  Delphinium variegatum ssp. thornei Munz -- accepted -- royal larkspur, Thorne's royal larkspur
  Delphinium variegatum ssp. variegatum Torr. & A. Gray -- accepted -- royal larkspur
  Delphinium variegatum var. apiculatum Greene -- not accepted
  Delphinium vimineum D. Don -- not accepted
  Delphinium virescens Nutt. -- not accepted -- Carolina larkspur, plains larkspur, prairie larkspur
  Delphinium virescens ssp. penardii (Huth) Ewan -- not accepted
  Delphinium virescens ssp. wootonii (Rydb.) Ewan -- not accepted
  Delphinium virescens var. macroceratilis (Rydb.) Cory -- not accepted
  Delphinium virescens var. penardii (Huth) L.M. Perry -- not accepted
  Delphinium virescens var. vimineum (D. Don) R.F. Martin -- not accepted
  Delphinium virescens var. wootonii (Rydb.) Shinners -- not accepted
  Delphinium viridescens Leiberg -- accepted -- Wenatchee larkspur
  Delphinium wootonii Rydb. -- accepted -- Organ Mountain larkspur
  Delphinium X burkei Greene (pro. sp.) -- accepted -- Burk larkspur, larkspur
  Delphinium X confertiflorum Wooton (pro. sp.) -- accepted -- larkspur
  Delphinium X diversicolor Rydb. -- accepted
  Delphinium X inflexum Davidson (pro. sp.) -- accepted -- larkspur
  Delphinium X macrophyllum Wooton (pro. sp.) -- not accepted -- larkspur
  Delphinium X nutans A. Nelson (pro. sp.) -- accepted -- larkspur
  Delphinium X occidentale (S. Watson) S. Watson (pro. sp.) -- accepted -- duncecap larkspur, tall larkspur
  Delphinium X pavonaceum Ewan (pro. sp.) -- not accepted -- peacock larkspur
  Delphinium xantholeucum Piper -- accepted -- northwestern larkspur, yellow white larkspur
  Delphinium xylorrhizum Rydb. -- not accepted -- larkspur
  Delphinium zalil Aitch. & Hemsl. -- not accepted -- zalil
  Enemion Raf. -- accepted -- false rue anemone
  Enemion biternatum Raf. -- accepted -- eastern false rue anemone
  Enemion hallii (A. Gray) J.R. Drumm. & Hutch. -- accepted -- Willamette false rue anemone
  Enemion occidentale (Hook. & Arn.) J.R. Drumm. & Hutch. -- accepted -- western false rue anemone
  Enemion savilei (Calder & R.L. Taylor) Keener -- accepted -- Queen Charlotte Island false rue anemone
  Enemion stipitatum (A. Gray) J.R. Drumm. & Hutch. -- accepted -- Siskiyou false rue anemone
  Eranthis Salisb. -- accepted
  Eranthis hyemalis (L.) Salisb. -- accepted -- winter aconite
  Ficaria ficaria (L.) H. Karst. -- not accepted
  Ficaria verna Huds. -- not accepted
  Halerpestes cymbalaria (Pursh) Greene -- not accepted
  Halerpestes cymbalaria ssp. saximontana (Fernald) Moldenke -- not accepted
  Hecatonia scelerata (L.) Fourr. -- not accepted
  Helleborus L. -- accepted -- hellebore
  Helleborus foetidus L. -- accepted -- setterwort
  Helleborus hyemalis L. -- not accepted
  Helleborus niger L. -- accepted -- black hellebore, Christmas-rose
  Helleborus orientalis Lam. -- accepted -- lenten-rose
  Helleborus viridis L. -- accepted -- green hellebore
  Hepatica Mill. -- not accepted
  Hepatica acuta (Pursh) Britton -- not accepted
  Hepatica acutiloba DC. -- not accepted
  Hepatica americana (DC.) Ker Gawl. -- not accepted
  Hepatica hepatica (L.) H. Karst. -- not accepted
  Hepatica nobilis Schreb. -- not accepted -- hepatica
  Hepatica nobilis var. acuta (Pursh) Steyerm. -- not accepted -- sharplobe hepatica
  Hepatica nobilis var. obtusa (Pursh) Steyerm. -- not accepted -- roundlobe hepatica
  Hepatica triloba var. acuta Pursh -- not accepted
  Hepatica triloba var. americana DC. -- not accepted
  Hydrastis L. -- accepted
  Hydrastis canadensis L. -- accepted -- goldenseal
  Isopyrum biternatum (Raf.) Torr. & A. Gray -- not accepted
  Isopyrum hallii A. Gray -- not accepted
  Isopyrum occidentale Hook. & Arn. -- not accepted
  Isopyrum savilei Calder & R.L. Taylor -- not accepted
  Isopyrum stipitatum A. Gray -- not accepted
  Jurtsevia richardsonii (Hook.) Á. Löve & D. Löve -- not accepted
  Kumlienia Greene -- not accepted -- false buttercup
  Kumlienia cooleyae (Vasey & Rose) Greene -- not accepted -- Cooley's false buttercup
  Kumlienia hystricula (A. Gray) Greene -- not accepted -- waterfall false buttercup
  Myosurus L. -- accepted -- mousetail
  Myosurus alopecuroides Greene -- not accepted
  Myosurus apetalus Gay -- accepted -- bristly mousetail
  Myosurus apetalus var. borealis Whittem. -- accepted -- bristly mousetail
  Myosurus apetalus var. montanus (G.R. Campb.) Whittem. -- accepted -- bristly mousetail, tiny mousetail
  Myosurus aristatus auct. non Benth. -- not accepted -- bristle mousetail
  Myosurus aristatus ssp. montanus (G.R. Campb.) D.E. Stone -- not accepted
  Myosurus clavicaulis M. Peck -- not accepted
  Myosurus cupulatus S. Watson -- accepted -- Arizona mousetail
  Myosurus egglestonii Wooton & Standl. -- not accepted
  Myosurus lepturus (A. Gray) Howell -- not accepted
  Myosurus minimus L. -- accepted -- tiny mousetail
  Myosurus minimus ssp. apus (Greene) G.R. Campb. -- not accepted -- tiny mousetail
  Myosurus minimus ssp. apus var. apus Greene -- not accepted -- tiny mousetail
  Myosurus minimus ssp. apus var. filiformis Greene -- not accepted -- tiny mousetail
  Myosurus minimus ssp. apus var. sessiliflorus (Huth) G.R. Campb. -- not accepted -- tiny mousetail
  Myosurus minimus ssp. major (Greene) G.R. Campb. -- not accepted -- tiny mousetail
  Myosurus minimus ssp. major var. clavicaulis (M. Peck) G.R. Campb. -- not accepted -- tiny mousetail
  Myosurus minimus ssp. major var. major (Greene) K.C. Davis -- not accepted -- tiny mousetail
  Myosurus minimus ssp. minimus L. -- not accepted -- tiny mousetail
  Myosurus minimus ssp. montanus G.R. Campb. -- not accepted
  Myosurus minimus var. apus Greene -- not accepted
  Myosurus minimus var. aristatus auct. non (Benth.) B. Boivin -- not accepted
  Myosurus minimus var. clavicaulis (M. Peck) G.R. Campb. -- not accepted
  Myosurus minimus var. filiformis Greene -- not accepted
  Myosurus minimus var. interior B. Boivin -- not accepted
  Myosurus minimus var. lepturus A. Gray -- not accepted
  Myosurus minimus var. major (Greene) K.C. Davis -- not accepted
  Myosurus minimus var. sessiliflorus (Huth) G.R. Campb. -- not accepted
  Myosurus minumus ssp. apus (Greene) G.R. Campb. -- not accepted
  Myosurus minumus ssp. major (Greene) G.R. Campb. -- not accepted
  Myosurus minumus var. apus Greene -- not accepted
  Myosurus minumus var. clavicaulis (M. Peck) G.R. Campb. -- not accepted
  Myosurus minumus var. interior B. Boivin -- not accepted
  Myosurus minumus var. lepturus A. Gray -- not accepted
  Myosurus nitidus Eastw. -- accepted -- western mousetail
  Myosurus sessilis S. Watson -- accepted -- vernal pool mousetail
  Nigella L. -- accepted
  Nigella damascena L. -- accepted -- devil in the bush, love in a mist
  Nigella hispanica L. -- accepted -- Spanish fennel
  Nigella sativa L. -- accepted -- black cumin
  Oxygraphis glacialis (Fisch.) Bunge -- not accepted
  Psychrophila leptosepala (DC.) W.A. Weber -- not accepted
  Pulsatilla Mill. -- not accepted -- pasqueflower
  Pulsatilla hirsutissima (Pursh) Britton -- not accepted
  Pulsatilla ludoviciana A. Heller -- not accepted
  Pulsatilla nuttalliana (DC.) Spreng. -- not accepted
  Pulsatilla occidentalis (S. Watson) Freyn -- not accepted -- white pasqueflower
  Pulsatilla patens (L.) Mill. -- not accepted -- American pasqueflower, eastern pasqueflower, pasqueflower
  Pulsatilla patens ssp. hirsutissima (Pursh) Zämelis -- not accepted
  Pulsatilla patens ssp. multifida (Pritz.) Zämelis -- not accepted -- American pasqueflower, cutleaf anemone, sticky pasqueflower
  Pulsatilla patens ssp. patens (L.) Mill. -- not accepted -- American pasqueflower, eastern pasqueflower
  Pulsatilla vulgaris Mill. -- not accepted -- European pasqueflower
  Ranunculaceae -- accepted -- boutons d'or, buttercups, crowfoot
  Ranunculus L. -- accepted -- buttercup, renoncules
  Ranunculus abortivus L. -- accepted -- early woodbuttercup, kidney-leaf buttercup, littleleaf buttercup, smallflower buttercup, smallflower crowfoot
  Ranunculus abortivus ssp. acrolasius (Fernald) B.M. Kapoor & Á. Löve -- not accepted
  Ranunculus abortivus var. abortivus L. -- not accepted -- littleleaf buttercup
  Ranunculus abortivus var. acrolasius Fernald -- not accepted
  Ranunculus abortivus var. eucyclus Fernald -- not accepted
  Ranunculus abortivus var. harveyi A. Gray -- not accepted
  Ranunculus abortivus var. indivisus Fernald -- not accepted
  Ranunculus abortivus var. typicus Fernald -- not accepted
  Ranunculus aconitifolius L. -- accepted
  Ranunculus acriformis A. Gray -- accepted -- sharpleaf buttercup
  Ranunculus acriformis var. acriformis A. Gray -- accepted -- autumn buttercup, sharpleaf buttercup
  Ranunculus acriformis var. aestivalis L.D. Benson -- accepted -- Autumn buttercup, fall buttercup, sharpleaf buttercup
  Ranunculus acriformis var. montanensis (Rydb.) L.D. Benson -- accepted -- mountain sharp buttercup
  Ranunculus acriformis var. typicus L.D. Benson -- not accepted
  Ranunculus acris L. -- accepted -- meadow buttercup, tall buttercup
  Ranunculus acris ssp. friesianus (Jord.) Rouy & Foucaud -- not accepted
  Ranunculus acris ssp. strigulosus (Schur) Hyl. -- not accepted
  Ranunculus acris var. acris L. -- not accepted -- meadow buttercup, showy buttercup, tall buttercup
  Ranunculus acris var. aestivalis (L.D. Benson) S.L. Welsh -- not accepted
  Ranunculus acris var. frigidus Regel -- not accepted -- meadow buttercup, tall buttercup
  Ranunculus acris var. latisectus Beck -- not accepted
  Ranunculus acris var. stevenii (Andrz. ex Besser) Lange -- not accepted
  Ranunculus acris var. typicus Beck -- not accepted
  Ranunculus acris var. villosus (Drabble) S.M. Coles -- not accepted
  Ranunculus adoneus A. Gray -- accepted -- alpine buttercup
  Ranunculus adoneus var. adoneus A. Gray -- not accepted -- alpine buttercup
  Ranunculus adoneus var. alpinus (S. Watson) L.D. Benson -- not accepted -- alpine buttercup
  Ranunculus adoneus var. typicus L.D. Benson -- not accepted
  Ranunculus aestivalis (L.D. Benson) Van Buren & K.T. Harper -- not accepted -- fall buttercup
  Ranunculus affinis R. Br. -- not accepted
  Ranunculus affinis var. micropetalus Greene -- not accepted
  Ranunculus alismifolius Geyer ex Benth. -- accepted -- dwarf buttercup, plantainleaf buttercup
  Ranunculus alismifolius var. alismellus A. Gray -- accepted -- plantainleaf buttercup
  Ranunculus alismifolius var. alismifolius Geyer ex Benth. -- accepted -- plantainleaf buttercup
  Ranunculus alismifolius var. davisii L.D. Benson -- accepted -- Davis' buttercup
  Ranunculus alismifolius var. hartwegii (Greene) Jeps. -- accepted -- plantainleaf buttercup
  Ranunculus alismifolius var. lemmonii (A. Gray) L.D. Benson -- accepted -- plantainleaf buttercup
  Ranunculus alismifolius var. montanus S. Watson -- accepted -- waterplantain buttercup
  Ranunculus alismifolius var. typicus L.D. Benson -- not accepted
  Ranunculus allegheniensis Britton -- accepted -- Allegheny Mountain buttercup
  Ranunculus allenii B.L. Rob. -- accepted -- allen buttercup, Allen's buttercup, renoncule d'Allen
  Ranunculus alpeophilus A. Nelson -- not accepted
  Ranunculus alveolatus A.M. Carter -- not accepted
  Ranunculus ambigens S. Watson -- accepted -- waterplantain spearwort
  Ranunculus amphibius E. James -- not accepted
  Ranunculus andersonii A. Gray -- accepted -- Anderson's buttercup, pink buttercup
  Ranunculus andersonii var. andersonii A. Gray -- not accepted -- Anderson's buttercup
  Ranunculus andersonii var. juniperinus (M.E. Jones) S.L. Welsh -- not accepted
  Ranunculus andersonii var. tenellus S. Watson -- not accepted -- Anderson's buttercup, desert buttercup
  Ranunculus aquatilis L. -- accepted -- water buttercup, white water crowfoot, whitewater crowfoot
  Ranunculus aquatilis var. aquatilis L. -- accepted -- white water crowfoot
  Ranunculus aquatilis var. calvescens (W.B. Drew) L.D. Benson -- not accepted
  Ranunculus aquatilis var. capillaceus (Thuill.) DC. -- not accepted
  Ranunculus aquatilis var. codyanus (B. Boivin) B. Boivin -- not accepted
  Ranunculus aquatilis var. confervoides (Fr.) G. Lawson -- not accepted
  Ranunculus aquatilis var. diffusus With. -- accepted
  Ranunculus aquatilis var. eradicatus Laest. -- not accepted
  Ranunculus aquatilis var. harrisii L.D. Benson -- not accepted
  Ranunculus aquatilis var. hispidulus Drew -- not accepted
  Ranunculus aquatilis var. lalondei L.D. Benson -- not accepted
  Ranunculus aquatilis var. lobbii (Hiern) S. Watson -- not accepted
  Ranunculus aquatilis var. longirostris (Godr.) G. Lawson -- not accepted
  Ranunculus aquatilis var. porteri (Britton) L.D. Benson -- not accepted
  Ranunculus aquatilis var. subrigidus (W.B. Drew) Breitung -- not accepted
  Ranunculus aquatilis var. trichophyllus (Chaix) A. Gray -- not accepted
  Ranunculus aquatilis var. typicus L.D. Benson -- not accepted
  Ranunculus arizonicus Lemmon ex A. Gray -- accepted -- Arizona buttercup
  Ranunculus arizonicus var. arizonicus Lemmon ex A. Gray -- accepted -- Arizona buttercup
  Ranunculus arizonicus var. subaffinis A. Gray -- not accepted
  Ranunculus arizonicus var. typicus L.D. Benson -- not accepted
  Ranunculus arvensis L. -- accepted -- corn buttercup
  Ranunculus arvensis var. tuberculatus (DC.) Koch -- not accepted
  Ranunculus auricomus L. -- accepted -- Greenland buttercup
  Ranunculus auricomus var. auricomus L. -- not accepted -- Greenland buttercup
  Ranunculus auricomus var. glabratus Lynge -- not accepted -- Greenland buttercup
  Ranunculus auricomus var. typicus Beck -- not accepted
  Ranunculus austrooreganus L.D. Benson -- not accepted -- Southern Oregon buttercup
  Ranunculus bloomeri S. Watson -- not accepted
  Ranunculus bonariensis Poir. -- accepted -- Carter's buttercup
  Ranunculus bonariensis var. bonariensis Poir. -- accepted
  Ranunculus bonariensis var. trisepalus (Gillies ex Hook. & Arn.) Lourteig -- accepted -- Carter's buttercup
  Ranunculus bongardii Greene -- not accepted
  Ranunculus bongardii var. tenellus (Nutt.) Greene -- not accepted
  Ranunculus boreanus Jord. -- not accepted
  Ranunculus bulbosus L. -- accepted -- blister flower, bulbous buttercup, bulbous crowfoot, gowan, St. Anthony's turnip, yellow weed
  Ranunculus bulbosus var. dissectus Babey -- not accepted
  Ranunculus bulbosus var. valdepubens (Jord.) Briq. -- not accepted
  Ranunculus californicus Benth. -- accepted -- California buttercup
  Ranunculus californicus var. austromontanus L.D. Benson -- not accepted
  Ranunculus californicus var. californicus Benth. -- accepted -- California buttercup
  Ranunculus californicus var. cuneatus Greene -- accepted
  Ranunculus californicus var. gratus Jeps. -- not accepted
  Ranunculus californicus var. laetus Greene -- not accepted
  Ranunculus californicus var. rugulosus (Greene) L.D. Benson -- not accepted
  Ranunculus californicus var. typicus L.D. Benson -- not accepted
  Ranunculus camissonis Schltdl. -- not accepted
  Ranunculus canus Benth. -- accepted -- Sacramento Valley buttercup
  Ranunculus canus var. canus Benth. -- accepted -- Sacramento Valley buttercup
  Ranunculus canus var. laetus (Greene) L.D. Benson -- not accepted
  Ranunculus canus var. ludovicianus (Greene) L.D. Benson -- accepted
  Ranunculus canus var. typicus L.D. Benson -- not accepted
  Ranunculus cardiophyllus Hook. -- accepted -- heart-leaf buttercup, heartleaf buttercup
  Ranunculus cardiophyllus var. coloradensis L.D. Benson -- not accepted
  Ranunculus cardiophyllus var. subsagittatus (A. Gray) L.D. Benson -- not accepted
  Ranunculus cardiophyllus var. typicus L.D. Benson -- not accepted
  Ranunculus caricetorum Greene -- not accepted
  Ranunculus carolinianus DC. -- not accepted
  Ranunculus carolinianus var. villicaulis Shinners -- not accepted
  Ranunculus chamissonis Schltdl. -- not accepted
  Ranunculus circinatus auct. non Sibth. -- not accepted -- buttercup
  Ranunculus circinatus var. subrigidus (W.B. Drew) L.D. Benson -- not accepted
  Ranunculus codyanus B. Boivin -- not accepted
  Ranunculus coloradensis (L.D. Benson) L.D. Benson -- not accepted -- Colorado buttercup
  Ranunculus confervoides (Fr.) Fr. -- not accepted
  Ranunculus cooleyae Vasey & Rose -- accepted -- Cooley's false buttercup
  Ranunculus cordiger Viv. -- accepted -- wingleaf buttercup
  Ranunculus cortusifolius Willd. -- accepted -- Azores buttercup
  Ranunculus cymbalaria Pursh -- accepted -- alkali buttercup, shore buttercup
  Ranunculus cymbalaria ssp. saximontanus (Fernald) Thorne -- not accepted
  Ranunculus cymbalaria var. alpinus Hook. -- not accepted
  Ranunculus cymbalaria var. cymbalaria Pursh -- not accepted -- alkali buttercup
  Ranunculus cymbalaria var. saximontanus Fernald -- not accepted -- Rocky Mountain buttercup
  Ranunculus cymbalaria var. typicus L.D. Benson -- not accepted
  Ranunculus delphiniifolius Torr. ex Eaton -- not accepted
  Ranunculus earlei Greene -- not accepted
  Ranunculus eastwoodianus L.D. Benson -- not accepted -- Eastwood's buttercup
  Ranunculus eisenii Kellogg -- not accepted
  Ranunculus ellipticus Greene -- not accepted
  Ranunculus eschscholtzii Schltdl. -- accepted -- Eschscholtz's buttercup, largeflower buttercup, spruce-fir buttercup
  Ranunculus eschscholtzii var. adoneus (A. Gray) C.L. Hitchc. -- not accepted
  Ranunculus eschscholtzii var. alpinus (S. Watson) C.L. Hitchc. -- not accepted
  Ranunculus eschscholtzii var. eschscholtzii Schltdl. -- accepted -- Eschscholtz's buttercup, spruce-fir buttercup
  Ranunculus eschscholtzii var. eximius (Greene) L.D. Benson -- accepted -- tundra buttercup
  Ranunculus eschscholtzii var. hultenianus L.D. Benson -- accepted -- Hulten's buttercup
  Ranunculus eschscholtzii var. oxynotus (A. Gray) Jeps. -- accepted -- Eschscholtz's buttercup
  Ranunculus eschscholtzii var. suksdorfii (A. Gray) L.D. Benson -- accepted -- Suksdorf's buttercup
  Ranunculus eschscholtzii var. trisectus (Eastw.) L.D. Benson -- accepted -- threesection buttercup
  Ranunculus eschscholtzii var. typicus L.D. Benson -- not accepted
  Ranunculus eximius Greene -- not accepted -- tundra buttercup
  Ranunculus falcatus auct. non L. -- not accepted
  Ranunculus fascicularis Muhl. ex Bigelow -- accepted -- early buttercup, prairie buttercup, tufted buttercup
  Ranunculus fascicularis var. apricus (Greene) Fernald -- not accepted
  Ranunculus fascicularis var. cuneiformis (Small) L.D. Benson -- not accepted -- Kerr crowfoot
  Ranunculus fascicularis var. typicus L.D. Benson -- not accepted
  Ranunculus fasciculatus Sessé & Moc. -- accepted -- Arsene's buttercup
  Ranunculus ficaria L. -- accepted -- fig buttercup
  Ranunculus ficaria ssp. bulbifera (Marsden-Jones) Lawalrée -- not accepted
  Ranunculus ficaria var. bulbifera Marsden-Jones -- not accepted -- fig buttercup
  Ranunculus ficaria var. ficaria L. -- not accepted -- fig buttercup
  Ranunculus filiformis Michx. -- not accepted
  Ranunculus filiformis var. ovalis Bigelow -- not accepted
  Ranunculus flabellaris Raf. -- accepted -- greater yellow water buttercup, renoncule ŕ éventails, yellow water buttercup, yellow water-crowfoot
  Ranunculus flaccidus Pers. -- not accepted
  Ranunculus flaccidus var. confervoides (Fr.) Hegi -- not accepted
  Ranunculus flammula L. -- accepted -- greater creeping spearwort, spearwort buttercup
  Ranunculus flammula var. angustifolius Wallr. -- not accepted -- greater creeping spearwort
  Ranunculus flammula var. filiformis (Michx.) Hook. -- not accepted -- greater creeping spearwort
  Ranunculus flammula var. flammula L. -- accepted -- flame buttercup, greater creeping spearwort
  Ranunculus flammula var. genuinus Buchenau -- not accepted
  Ranunculus flammula var. laxicaulis Torr. & A. Gray -- not accepted
  Ranunculus flammula var. ovalis (Bigelow) L.D. Benson -- accepted
  Ranunculus flammula var. reptans (L.) E. Mey. -- accepted -- greater creeping spearwort
  Ranunculus flammula var. samolifolius (Greene) L.D. Benson -- not accepted
  Ranunculus gelidus Kar. & Kir. -- accepted -- ice cold buttercup
  Ranunculus gelidus ssp. grayi (Britton) Hultén -- not accepted
  Ranunculus gelidus var. shumaginensis Hultén -- not accepted
  Ranunculus glaberrimus Hook. -- accepted -- sagebrush buttercup
  Ranunculus glaberrimus var. buddii B. Boivin -- not accepted
  Ranunculus glaberrimus var. ellipticus (Greene) Greene -- accepted -- elliptical buttercup, sagebrush buttercup
  Ranunculus glaberrimus var. glaberrimus Hook. -- accepted -- sagebrush buttercup
  Ranunculus glaberrimus var. reconditus L.D. Benson -- not accepted -- sagebrush buttercup
  Ranunculus glaberrimus var. typicus L.D. Benson -- not accepted
  Ranunculus glacialis L. -- accepted -- glacier buttercup
  Ranunculus glacialis ssp. camissonis (Schltdl.) Hultén -- not accepted
  Ranunculus glacialis ssp. chamissonis (Schltdl.) Hultén -- not accepted
  Ranunculus glacialis var. camissonis (Schltdl.) L.D. Benson -- accepted -- glacier buttercup
  Ranunculus glacialis var. chamissonis (Schltdl.) L.D. Benson -- not accepted -- glacier buttercup
  Ranunculus glacialis var. glacialis L. -- accepted -- glacier buttercup
  Ranunculus gmelini DC. -- not accepted
  Ranunculus gmelini var. gmelini DC. -- not accepted
  Ranunculus gmelini var. hookeri (D. Don) L.D. Benson -- not accepted
  Ranunculus gmelini var. limosus (Nutt.) H. Hara -- not accepted
  Ranunculus gmelini var. purshii (Richardson) H. Hara -- not accepted
  Ranunculus gmelinii DC. -- accepted -- Gmelin's buttercup, lesser yellow water buttercup, small yellow water buttercup
  Ranunculus gmelinii ssp. purshii (Richardson) Hultén -- not accepted
  Ranunculus gmelinii var. gmelinii DC. -- not accepted -- Gmelin's buttercup
  Ranunculus gmelinii var. hookeri (D. Don) L.D. Benson -- not accepted
  Ranunculus gmelinii var. limosus (Nutt.) H. Hara -- not accepted -- Gmelin's buttercup
  Ranunculus gmelinii var. prolificus (Fernald) H. Hara -- not accepted
  Ranunculus gmelinii var. purshii (Richardson) H. Hara -- not accepted -- Pursh's buttercup
  Ranunculus gmelinii var. terrestris (Ledeb.) L.D. Benson -- not accepted
  Ranunculus gmelinii var. typicus L.D. Benson -- not accepted
  Ranunculus gormanii Greene -- accepted -- Gorman's buttercup
  Ranunculus gramineus L. -- accepted
  Ranunculus grandis Honda -- not accepted
  Ranunculus grandis var. austrokurilensis (Tatew.) H. Hara -- not accepted
  Ranunculus grayi Britton -- accepted -- wetslope buttercup
  Ranunculus hartwegii Greene -- not accepted
  Ranunculus harveyi (A. Gray) Britton -- accepted -- Harvey's buttercup
  Ranunculus harveyi var. australis (Brandegee) L.D. Benson -- accepted
  Ranunculus harveyi var. harveyi (A. Gray) Britton -- accepted -- Harvey's buttercup
  Ranunculus harveyi var. pilosus Benke -- not accepted
  Ranunculus harveyi var. typicus L.D. Benson -- not accepted
  Ranunculus hawaiensis A. Gray -- accepted -- Hawai'ian buttercup, makou
  Ranunculus hebecarpus Hook. & Arn. -- accepted -- delicate buttercup, downy-fruit buttercup
  Ranunculus hederaceus L. -- accepted -- ivy buttercup
  Ranunculus hexasepalus (L.D. Benson) L.D. Benson -- not accepted -- Queen Charlotte Island buttercup
  Ranunculus hispidus Michx. -- accepted -- bristly buttercup
  Ranunculus hispidus var. caricetorum (Greene) T. Duncan -- accepted -- bristly buttercup
  Ranunculus hispidus var. eurylobus L.D. Benson -- not accepted
  Ranunculus hispidus var. falsus Fernald -- not accepted
  Ranunculus hispidus var. greenmanii L.D. Benson -- not accepted
  Ranunculus hispidus var. hispidus Michx. -- accepted -- bristly buttercup
  Ranunculus hispidus var. marilandicus (Poir.) L.D. Benson -- not accepted
  Ranunculus hispidus var. nitidus (Chapm.) T. Duncan -- accepted -- bristly buttercup, swamp buttercup
  Ranunculus hispidus var. typicus L.D. Benson -- not accepted
  Ranunculus howellii Greene -- not accepted
  Ranunculus hydrocharoides A. Gray -- accepted -- frogbit buttercup
  Ranunculus hydrocharoides var. hydrocharoides A. Gray -- not accepted -- frogbit buttercup
  Ranunculus hydrocharoides var. natans (Nees ex G. Don) L.D. Benson -- not accepted
  Ranunculus hydrocharoides var. stolonifer (Hemsl.) L.D. Benson -- not accepted -- frogbit buttercup
  Ranunculus hydrocharoides var. typicus L.D. Benson -- not accepted
  Ranunculus hyperboreus Rottb. -- accepted -- arctic buttercup, high northern buttercup
  Ranunculus hyperboreus ssp. arnellii Scheutz -- not accepted
  Ranunculus hyperboreus ssp. intertextus (Greene) B.M. Kapoor & Á. Löve -- not accepted
  Ranunculus hyperboreus var. hyperboreus Rottb. -- not accepted -- large nodding buttercup
  Ranunculus hyperboreus var. intertextus (Greene) B. Boivin -- not accepted
  Ranunculus hyperboreus var. tuquetilianus Polunin -- not accepted
  Ranunculus hystriculus A. Gray -- accepted -- waterfall false buttercup
  Ranunculus inamoenus Greene -- accepted -- graceful buttercup
  Ranunculus inamoenus ssp. subaffinis (A. Gray) R.L. Taylor & MacBryde -- not accepted
  Ranunculus inamoenus var. alpeophilus (A. Nelson) L.D. Benson -- not accepted -- graceful buttercup
  Ranunculus inamoenus var. inamoenus Greene -- accepted -- graceful buttercup
  Ranunculus inamoenus var. subaffinis (A. Gray) L.D. Benson -- accepted -- graceful buttercup
  Ranunculus inamoenus var. typicus L.D. Benson -- not accepted
  Ranunculus intertextus Greene -- not accepted
  Ranunculus jovis A. Nelson -- accepted -- Utah buttercup
  Ranunculus juniperinus M.E. Jones -- not accepted
  Ranunculus kamchaticus DC. -- accepted -- Kamchatka buttercup
  Ranunculus kamtschaticus DC. -- not accepted
  Ranunculus karelinii Czerep. -- not accepted -- ice cold buttercup
  Ranunculus lappaceus Sm. -- accepted -- Australian buttercup
  Ranunculus lapponicus L. -- accepted -- Lapland buttercup
  Ranunculus laxicaulis (Torr. & A. Gray) Darby -- accepted -- Mississippi buttercup
  Ranunculus laxicaulis var. laxicaulis (Torr. & A. Gray) Darby -- not accepted -- Mississippi buttercup
  Ranunculus laxicaulis var. mississippiensis (Small) L.D. Benson -- not accepted
  Ranunculus lemmonii A. Gray -- not accepted
  Ranunculus limosus Nutt. -- not accepted
  Ranunculus lindheimeri Engelm. -- not accepted
  Ranunculus lobbii (Hiern) A. Gray -- accepted -- Lobb's buttercup
  Ranunculus longirostris Godr. -- not accepted -- eastern white water-crowfoot, long-beak water-crowfoot, longbeak buttercup, renoncule ŕ long bec
  Ranunculus ludovicianus Greene -- not accepted
  Ranunculus macauleyi A. Gray -- accepted -- Rocky Mountain buttercup
  Ranunculus macauleyi var. brandegeei L.D. Benson -- not accepted -- Brandegee's buttercup
  Ranunculus macauleyi var. macauleyi A. Gray -- not accepted -- MaCauley's buttercup, Rocky Mountain buttercup
  Ranunculus macauleyi var. typicus L.D. Benson -- not accepted
  Ranunculus macounii Britton -- accepted -- Macoun's buttercup
  Ranunculus macounii var. oreganus (A. Gray) K.C. Davis -- not accepted
  Ranunculus macranthus Scheele -- accepted -- large buttercup, showy buttercup, smallflower buttercup
  Ranunculus macranthus var. arsenei L.D. Benson -- not accepted
  Ranunculus macranthus var. typicus L.D. Benson -- not accepted
  Ranunculus marginatus d'Urv. -- accepted -- margined buttercup
  Ranunculus marginatus var. marginatus d'Urv. -- not accepted -- margined buttercup
  Ranunculus marginatus var. trachycarpus (Fisch. & C.A. Mey.) Arn. -- not accepted -- margined buttercup
  Ranunculus mauiensis A. Gray -- accepted -- makou, Maui buttercup
  Ranunculus mauiensis var. longistylus Skottsb. -- not accepted
  Ranunculus micranthus Nutt. -- accepted -- rock buttercup
  Ranunculus micranthus var. cymbalistes (Greene) Fernald -- not accepted
  Ranunculus micranthus var. delitescens (Greene) Fernald -- not accepted
  Ranunculus mississippiensis Small -- not accepted
  Ranunculus muricatus L. -- accepted -- spinyfruit buttercup
  Ranunculus natans C.A. Mey. -- accepted -- nodding buttercup
  Ranunculus natans var. intertextus (Greene) L.D. Benson -- not accepted
  Ranunculus natans var. typicus L.D. Benson -- not accepted
  Ranunculus nelsonii (DC.) A. Gray -- not accepted
  Ranunculus nitidus Muhl. ex Elliott -- not accepted
  Ranunculus nivalis L. -- accepted -- snow buttercup
  Ranunculus nivalis var. eschscholtzii (Schltdl.) S. Watson -- not accepted
  Ranunculus nivalis var. sulphureus (Sol. ex C.J. Phipps) Wahlenb. -- not accepted
  Ranunculus oblongifolius Elliott -- not accepted
  Ranunculus obtusiusculus Raf. -- not accepted
  Ranunculus occidentalis Nutt. -- accepted -- western buttercup
  Ranunculus occidentalis ssp. insularis Hultén -- not accepted
  Ranunculus occidentalis ssp. nelsonii (DC.) Hultén -- not accepted
  Ranunculus occidentalis var. brevistylis Greene -- accepted -- western buttercup
  Ranunculus occidentalis var. dissectus L.F. Hend. -- accepted -- western buttercup
  Ranunculus occidentalis var. eisenii (Kellogg) A. Gray -- not accepted
  Ranunculus occidentalis var. hexasepalus L.D. Benson -- accepted -- western buttercup
  Ranunculus occidentalis var. howellii Greene -- accepted -- western buttercup
  Ranunculus occidentalis var. nelsonii (DC.) L.D. Benson -- accepted -- Nelson's buttercup
  Ranunculus occidentalis var. occidentalis Nutt. -- accepted -- western buttercup
  Ranunculus occidentalis var. parviflorus Torr. -- not accepted
  Ranunculus occidentalis var. rattanii A. Gray -- not accepted
  Ranunculus occidentalis var. turneri (Greene) L.D. Benson -- not accepted
  Ranunculus occidentalis var. typicus L.D. Benson -- not accepted
  Ranunculus occidentalis var. ultramontanus Greene -- accepted -- western buttercup
  Ranunculus oreogenes Greene -- not accepted -- Oregon buttercup
  Ranunculus oresterus L.D. Benson -- accepted -- Blue Mountain buttercup
  Ranunculus orthorhynchus Hook. -- accepted -- straightbeak buttercup
  Ranunculus orthorhynchus ssp. alaschensis (L.D. Benson) Hultén -- not accepted
  Ranunculus orthorhynchus ssp. platyphyllus (A. Gray) R.L. Taylor & MacBryde -- not accepted
  Ranunculus orthorhynchus var. alaschensis L.D. Benson -- not accepted
  Ranunculus orthorhynchus var. alpinus S. Watson -- not accepted
  Ranunculus orthorhynchus var. bloomeri (S. Watson) L.D. Benson -- accepted -- Bloomer's buttercup
  Ranunculus orthorhynchus var. hallii Jeps. -- not accepted
  Ranunculus orthorhynchus var. orthorhynchus Hook. -- accepted -- straightbeak buttercup
  Ranunculus orthorhynchus var. platyphyllus A. Gray -- accepted
  Ranunculus orthorhynchus var. typicus L.D. Benson -- not accepted
  Ranunculus ovalis Raf. -- not accepted
  Ranunculus oxynotus A. Gray -- not accepted
  Ranunculus pacificus (Hultén) L.D. Benson -- accepted -- Pacific buttercup
  Ranunculus pallasii Schltdl. -- accepted -- Pallas' buttercup
  Ranunculus palmatus Elliott -- not accepted
  Ranunculus parviflorus L. -- accepted -- smallflower buttercup, sticktight buttercup
  Ranunculus parvulus L. -- not accepted
  Ranunculus pedatifidus Sm. -- accepted -- northern buttercup, surefoot buttercup
  Ranunculus pedatifidus ssp. affinis (R. Br.) Hultén -- not accepted
  Ranunculus pedatifidus var. affinis (R. Br.) L.D. Benson -- accepted -- northern buttercup
  Ranunculus pedatifidus var. leiocarpus (Trautv.) Fernald -- not accepted
  Ranunculus pedatifidus var. pedatifidus Sm. -- accepted -- surefoot buttercup
  Ranunculus pensylvanicus L. f. -- accepted -- bristly buttercup, Pennsylvania buttercup
  Ranunculus petiolaris Kunth ex DC. -- accepted -- Latin American buttercup
  Ranunculus petiolaris var. arsenei (L.D. Benson) T. Duncan -- not accepted -- Arsene's buttercup
  Ranunculus petiolaris var. petiolaris Kunth ex DC. -- not accepted
  Ranunculus platensis Spreng. -- accepted -- prairie buttercup
  Ranunculus plebeius R. Br. ex DC. -- accepted -- common Australian buttercup
  Ranunculus populago Greene -- accepted -- popular buttercup
  Ranunculus purshii Richardson -- not accepted
  Ranunculus pusillus Poir. -- accepted -- low spearwort, weak buttercup
  Ranunculus pusillus var. angustifolius (Engelm.) L.D. Benson -- not accepted -- low spearwort
  Ranunculus pusillus var. lindheimeri (Engelm.) A. Gray -- not accepted
  Ranunculus pusillus var. pusillus Poir. -- not accepted -- low spearwort
  Ranunculus pusillus var. trachyspermus Engelm. -- not accepted
  Ranunculus pusillus var. typicus L.D. Benson -- not accepted
  Ranunculus pygmaeus Wahlenb. -- accepted -- pygmy buttercup
  Ranunculus pygmaeus ssp. sabinei (R. Br.) Hultén -- not accepted
  Ranunculus pygmaeus var. langianus Nath. -- not accepted -- pygmy buttercup
  Ranunculus pygmaeus var. pygmaeus Wahlenb. -- not accepted -- pygmy buttercup
  Ranunculus ranunculinus (Nutt.) Rydb. -- accepted -- tadpole buttercup
  Ranunculus reconditus A. Nelson & J.F. Macbr. -- not accepted
  Ranunculus recurvatus Poir. -- accepted -- blisterwort, littleleaf buttercup
  Ranunculus recurvatus var. adpressipilis Weath. -- not accepted
  Ranunculus recurvatus var. nelsonii DC. -- not accepted
  Ranunculus recurvatus var. recurvatus Poir. -- accepted -- blisterwort
  Ranunculus recurvatus var. tropicus (Griseb.) Fawc. & Rendle -- accepted -- blisterwort
  Ranunculus recurvatus var. typicus L.D. Benson -- not accepted
  Ranunculus repens L. -- accepted -- creeping buttercup
  Ranunculus repens var. degeneratus Schur -- not accepted -- creeping buttercup
  Ranunculus repens var. erectus DC. -- not accepted
  Ranunculus repens var. glabratus DC. -- not accepted -- creeping buttercup
  Ranunculus repens var. linearilobus DC. -- not accepted
  Ranunculus repens var. pleniflorus Fernald -- not accepted
  Ranunculus repens var. repens L. -- not accepted -- creeping buttercup
  Ranunculus repens var. typicus Beck -- not accepted
  Ranunculus repens var. villosus Lamotte -- not accepted
  Ranunculus reptans L. -- not accepted
  Ranunculus reptans var. filiformis (Michx.) DC. -- not accepted
  Ranunculus reptans var. intermedius (Hook.) Torr. & A. Gray -- not accepted
  Ranunculus reptans var. ovalis (Bigelow) Torr. & A. Gray -- not accepted
  Ranunculus rhomboideus Goldie -- accepted -- Labrador buttercup
  Ranunculus rugulosus Greene -- not accepted
  Ranunculus sabinei R. Br. -- accepted -- Sabine buttercup, Sardinian buttercup
  Ranunculus sardous Crantz -- accepted -- hairy buttercup
  Ranunculus sceleratus L. -- accepted -- celeryleaf buttercup, cursed buttercup
  Ranunculus sceleratus ssp. multifidus (Nutt.) Hultén -- not accepted
  Ranunculus sceleratus var. multifidus Nutt. -- accepted -- blister buttercup, cursed buttercup
  Ranunculus sceleratus var. sceleratus L. -- accepted -- cursed buttercup
  Ranunculus sceleratus var. typicus L.D. Benson -- not accepted
  Ranunculus septentrionalis Poir. -- not accepted
  Ranunculus septentrionalis ssp. pacificus Hultén -- not accepted
  Ranunculus septentrionalis var. caricetorum (Greene) Fernald -- not accepted
  Ranunculus septentrionalis var. nitidus (Chapm.) Chapm. -- not accepted
  Ranunculus septentrionalis var. pterocarpus L.D. Benson -- not accepted
  Ranunculus siciformis Mack. & Bush ex Rydb. -- not accepted
  Ranunculus stolonifer Hemsl. -- not accepted
  Ranunculus subcordatus E.O. Beal -- not accepted -- Bladen buttercup
  Ranunculus subrigidus W.B. Drew -- not accepted
  Ranunculus suksdorfii A. Gray -- not accepted -- Suksdorf's buttercup
  Ranunculus sulphureus Sol. ex C.J. Phipps -- accepted -- renoncule soufrée, sulphur butter-cup, sulphur buttercup
  Ranunculus sulphureus var. intercedens Hultén -- not accepted
  Ranunculus sulphureus var. sulphureus Sol. ex C.J. Phipps -- not accepted -- sulphur buttercup
  Ranunculus tener C. Mohr -- not accepted
  Ranunculus testiculatus Crantz -- accepted -- bur buttercup, curveseed butterwort, little bur, testiculate buttercup
  Ranunculus texensis Engelm. & A. Gray -- not accepted
  Ranunculus trachycarpus Fisch. & C.A. Mey. -- not accepted
  Ranunculus trichophyllus Chaix -- not accepted -- thread-leaf water-crowfoot, threadleaf crowfoot, white water buttercup, whitewater crowfoot
  Ranunculus trichophyllus ssp. eradicatus (Laest.) C.D.K. Cook -- not accepted
  Ranunculus trichophyllus ssp. lutulentus (Perrier & Songeon) Vierh. -- not accepted
  Ranunculus trichophyllus var. calvescens W.B. Drew -- not accepted
  Ranunculus trichophyllus var. confervoides (Fr.) Rikli -- not accepted
  Ranunculus trichophyllus var. eradicatus (Laest.) W.B. Drew -- not accepted -- threadleaf crowfoot
  Ranunculus trichophyllus var. hispidulus (Drew) W.B. Drew -- not accepted
  Ranunculus trichophyllus var. trichophyllus Chaix -- not accepted -- hairleaf water buttercup, thread-leaf water-crowfoot, threadleaf crowfoot
  Ranunculus trichophyllus var. typicus W.B. Drew -- not accepted
  Ranunculus trilobus Desf. -- accepted -- threelobe buttercup
  Ranunculus trisectus Eastw. -- not accepted
  Ranunculus trisepalus Gillies ex Hook. & Arn. -- not accepted
  Ranunculus triternatus A. Gray -- accepted -- obscure buttercup
  Ranunculus turneri Greene -- accepted -- Turner's buttercup
  Ranunculus uncinatus D. Don ex G. Don -- accepted -- hooked buttercup, woodland buttercup
  Ranunculus uncinatus var. earlei (Greene) L.D. Benson -- not accepted -- Earle's buttercup
  Ranunculus uncinatus var. parviflorus (Torr.) L.D. Benson -- not accepted -- Idaho buttercup
  Ranunculus uncinatus var. typicus L.D. Benson -- not accepted
  Ranunculus uncinatus var. uncinatus D. Don ex G. Don -- not accepted -- woodland buttercup
  Ranunculus usneoides Greene -- not accepted
  Ranunculus verecundus B.L. Rob. ex Piper -- not accepted -- wetslope buttercup
  Ranunculus X spitzbergensis (Nath.) Hadac -- accepted -- Spitzbergen's buttercup
  Syndesmon thalictroides (L.) Hoffmanns. ex Britton -- not accepted
  Thacla natans (Pall. ex Georgi) Deyl & Soják -- not accepted
  Thalictrum L. -- accepted -- meadow-rue, meadowrue
  Thalictrum alpinum L. -- accepted -- alpine meadow-rue, alpine meadowrue
  Thalictrum alpinum var. hebetum B. Boivin -- not accepted
  Thalictrum aquilegifolium L. -- not accepted -- columbine meadow-rue
  Thalictrum aquilegiifolium L. -- accepted
  Thalictrum arkansanum B. Boivin -- accepted -- Arkansas meadow-rue, Arkansas meadowrue
  Thalictrum breitungii B. Boivin -- not accepted
  Thalictrum caulophylloides Small -- not accepted
  Thalictrum clavatum DC. -- accepted -- mountain meadow-rue
  Thalictrum collinum Wallr. -- not accepted
  Thalictrum confine Fernald -- accepted
  Thalictrum confine var. columbianum (Rydb.) B. Boivin -- not accepted
  Thalictrum confine var. greeneanum B. Boivin -- not accepted
  Thalictrum cooleyi H.E. Ahles -- accepted -- Cooley's meadow-rue, Cooley's meadowrue
  Thalictrum coriaceum (Britton) Small -- accepted -- maid of the mist
  Thalictrum dasycarpum Fisch. & Avé-Lall. -- accepted -- purple meadow-rue, purple meadowrue
  Thalictrum dasycarpum var. hypoglaucum (Rydb.) B. Boivin -- not accepted
  Thalictrum debile Buckley -- accepted -- southern meadow-rue
  Thalictrum dioicum L. -- accepted -- early meadow-rue
  Thalictrum fendleri Engelm. ex A. Gray -- accepted -- Fendler's meadow-rue, Fendler's meadowrue
  Thalictrum fendleri var. fendleri Engelm. ex A. Gray -- not accepted -- Fendler's meadow-rue, Fendler's meadowrue
  Thalictrum fendleri var. platycarpum Trel. -- not accepted
  Thalictrum fendleri var. polycarpum Torr. -- not accepted -- Fendler's meadow-rue, manyfruit meadowrue
  Thalictrum fendleri var. wrightii (A. Gray) Trel. -- not accepted -- Wright's meadow rue, Wright's meadow-rue, Wright's meadowrue
  Thalictrum heliophilum Wilken & DeMott -- accepted -- Cathedral Bluff meadow-rue
  Thalictrum hultenii B. Boivin -- not accepted -- Hulten's meadow-rue
  Thalictrum hypoglaucum Rydb. -- not accepted
  Thalictrum macrostylum Small & A. Heller -- accepted -- piedmont meadow-rue
  Thalictrum minus L. -- accepted -- small meadowrue
  Thalictrum minus ssp. kemense (Fr.) Hultén -- not accepted
  Thalictrum minus ssp. minus L. -- not accepted
  Thalictrum minus var. minus L. -- not accepted
  Thalictrum mirabile Small -- accepted -- little mountain meadow-rue
  Thalictrum nigromontanum B. Boivin -- not accepted -- Black Hills meadow-rue
  Thalictrum occidentale A. Gray -- accepted -- western meadow-rue, western meadowrue
  Thalictrum occidentale var. columbianum (Rydb.) M. Peck -- not accepted
  Thalictrum occidentale var. macounii B. Boivin -- not accepted -- Macoun's western meadowrue
  Thalictrum occidentale var. megacarpum (Torr.) H. St. John -- not accepted
  Thalictrum occidentale var. occidentale A. Gray -- not accepted -- western meadow-rue, western meadowrue
  Thalictrum occidentale var. palousense H. St. John -- not accepted
  Thalictrum perelegans Greene -- not accepted
  Thalictrum polycarpum (Torr.) S. Watson -- accepted
  Thalictrum polygamum Muhl. ex Spreng. -- not accepted
  Thalictrum polygamum var. hebecarpum Fernald -- not accepted
  Thalictrum polygamum var. intermedium B. Boivin -- not accepted
  Thalictrum pubescens Pursh -- accepted -- king of the meadow
  Thalictrum pubescens var. hebecarpum (Fernald) B. Boivin -- not accepted
  Thalictrum pubescens var. hepaticum (Greene) Keener -- not accepted
  Thalictrum revolutum DC. -- accepted -- waxyleaf meadow-rue, waxyleaf meadowrue
  Thalictrum revolutum var. glandulosior B. Boivin -- not accepted
  Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey. -- accepted -- fewflower meadow-rue, fewflower meadowrue
  Thalictrum sparsiflorum ssp. richardsonii (A. Gray) Cody -- not accepted
  Thalictrum sparsiflorum var. nevadense B. Boivin -- not accepted
  Thalictrum sparsiflorum var. richardsonii (A. Gray) B. Boivin -- not accepted -- Richarson's meadow-rue
  Thalictrum sparsiflorum var. saximontanum B. Boivin -- not accepted -- fewflower meadow-rue, fewflower meadowrue
  Thalictrum sparsiflorum var. sparsiflorum Turcz. ex Fisch. & C.A. Mey. -- not accepted
  Thalictrum squarrosum Stephan ex Willd. -- accepted
  Thalictrum steeleanum B. Boivin -- not accepted -- Steele's meadowrue
  Thalictrum subrotundum B. Boivin -- not accepted
  Thalictrum texanum (A. Gray) Small -- accepted -- Houston meadow-rue, Houston meadowrue
  Thalictrum thalictroides (L.) Eames & B. Boivin -- accepted -- rue anemone
  Thalictrum turneri B. Boivin -- not accepted
  Thalictrum venulosum Trel. -- accepted -- veiny meadow-rue, veiny meadowrue, veiny-leaf meadow-rue
  Thalictrum venulosum var. confine (Fernald) B. Boivin -- not accepted
  Thalictrum venulosum var. fissum (Greene) B. Boivin -- not accepted
  Thalictrum venulosum var. lunellii (Greene) B. Boivin -- not accepted
  Thalictrum venulosum var. turneri (B. Boivin) B. Boivin -- not accepted
  Trautvetteria Fisch. & C.A. Mey. -- accepted -- bugbane
  Trautvetteria caroliniensis (Walter) Vail -- accepted -- Carolina bugbane, Carolina tassel-rue, falsebugbane
  Trautvetteria caroliniensis var. caroliniensis (Walter) Vail -- not accepted -- Carolina bugbane
  Trautvetteria caroliniensis var. occidentalis (A. Gray) C.L. Hitchc. -- not accepted -- western bugbane
  Trautvetteria grandis Nutt. -- not accepted
  Trollius L. -- accepted -- globeflower
  Trollius albiflorus (A. Gray) Rydb. -- accepted
  Trollius europaeus L. -- accepted -- European globeflower
  Trollius laxus Salisb. -- accepted -- American globeflower
  Trollius laxus ssp. albiflorus (A. Gray) Á. Löve, D. Löve, & B.M. Kapoor -- not accepted -- American globeflower
  Trollius laxus ssp. laxus Salisb. -- not accepted -- American globeflower
  Trollius laxus var. albiflorus A. Gray -- not accepted
  Trollius riederanus Fisch. & C.A. Mey. -- not accepted
  Trollius riederianus Fisch. & C.A. Mey. -- accepted -- Kamchatka globeflower
  Viorna addisonii (Britton) Small -- not accepted
  Viorna baldwinii (Torr. & A. Gray) Small -- not accepted
  Viorna beadlei Small -- not accepted
  Viorna crispa (L.) Small -- not accepted
  Viorna crispa var. walteri (Pursh) Small -- not accepted
  Viorna flaccida (Small) Small -- not accepted
  Viorna fremontii (S. Watson) A. Heller -- not accepted
  Viorna gattingeri (Small) Small -- not accepted
  Viorna glaucophylla (Small) Small -- not accepted
  Viorna obliqua Small -- not accepted
  Viorna ochroleuca (Aiton) Small -- not accepted
  Viorna ovata (Pursh) Small -- not accepted
  Viorna pitcheri (Torr. & A. Gray) Britton -- not accepted
  Viorna reticulata (Walter) Small -- not accepted
  Viorna ridgwayi Standl. -- not accepted
  Viorna scottii (Porter) Rydb. -- not accepted
  Viorna subreticulata Harb. ex Small -- not accepted
  Viorna versicolor (Small ex Rydb.) Small -- not accepted
  Viorna viorna (L.) Small -- not accepted
  Viticella orientalis (L.) W.A. Weber -- not accepted
  Viticella viticella (L.) Small -- not accepted
  Xanthorhiza Marshall -- accepted -- yellowroot
  Xanthorhiza simplicissima Marshall -- accepted -- yellowroot
   

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